What's new

v0.34.0 — October 2026

The calculator now covers all 50 states. Kansas, Iowa, Arkansas, Mississippi, Nebraska, Maine, Rhode Island, Vermont, Hawaii, Delaware, Wyoming and West Virginia are in, each with its own tax rules, fees and an advertised-price section.
Arkansas used-car tax tiers: no tax under $4,000, a 3.5% state rate from $4,000 to $9,999, and the full rate from $10,000.
Kansas follows the higher of the dealer's rate and yours. Enter the dealer's ZIP and the calculator uses the higher one.
Trade-in questions where the state asks them. Delaware and West Virginia give the trade-in credit only for a trade titled in the state; Rhode Island only when a passenger car is traded toward a passenger car. Tick the boxes under More options.
Rhode Island, Hawaii and Mississippi have rules that let a dealer leave a fee out of an advertised price, which conflicts with what the FTC expects. Those pages say so, and the guide on which states allow it now lists 27.

v0.33.0 — October 2026

Optional loan estimate under your out-the-door total. Enter the interest rate, the term and any cash down, and see the monthly payment and the total interest. It runs in your browser; the rate and term are not sent or saved.
The "states with full rules" number on the home page now counts up from 1.

v0.32.0 — October 2026

Connecticut, Oklahoma, Utah, Alabama and Louisiana are now in the calculator, each with its own tax rules, fees and an advertised-price section. Connecticut charges 7.75% on the whole price when it is over $50,000. Oklahoma has two taxes with different trade-in rules, shown on separate lines. Louisiana's local tax is by parish.
Enter the dealer's ZIP for an exact tax in states that tax at the dealer's location (Alabama, Alaska, Arizona, Illinois, Nevada, Tennessee, Utah and Washington). Registration and county fees still follow your ZIP. Leave it blank and the estimate uses yours.
Oklahoma (used cars only), Utah and Louisiana have rules that let a dealer leave a fee out of an advertised price, which conflicts with what the FTC expects. Those pages say so.

v0.31.0 — October 2026

New guide: which states let dealers leave the doc fee out of the advertised price. A state-by-state list of the 21 states where the state's own rule allows it, why the FTC's requirement still governs, and what to ask a dealer. The state pages with a conflict note now link to it.
North Carolina now carries the same conflict note as Arizona and South Carolina: its law requires an ad to disclose the doc fee and its amount, but doesn't say the advertised price must include it.

v0.30.0 — October 2026

North Dakota, South Dakota, New Mexico, Montana, Alaska and New Hampshire are now in the calculator, each with its own tax rules, fees and an advertised-price section. North Dakota, South Dakota and New Mexico charge a motor vehicle excise tax (5%, 4% and 4%) instead of sales tax. Montana has no tax on the sale, and charges age-based registration plus a county option tax. Alaska's local sales tax follows the dealer's town and usually applies only to the first part of the price. New Hampshire has no sales tax, and its town permit fee is a share of the car's list price.
New Mexico estimates add the gross receipts tax the dealer charges on its own fee and on service contracts. The rate depends on where the dealer is, so the line is marked as an estimate.
South Dakota's and New Mexico's advertising rules let a dealer leave a fee out of an advertised price, which conflicts with what the FTC expects. Those pages say so.
Tax estimates no longer tax a doc fee that is already in your price, in the states that don't tax it (Arizona, Minnesota, New York, Ohio, Pennsylvania, Texas, Washington and North Dakota). Those estimates drop by about $15 to $45.

v0.29.0 — October 2026

South Carolina, Kentucky, Tennessee and Colorado are now in the calculator, each with its own tax rules, fees and an advertised-price section. South Carolina charges a 5% infrastructure maintenance fee capped at $500 instead of sales tax; Kentucky charges a 6% usage tax; Tennessee adds a second state tax on the part of the price between $1,600 and $3,200; Colorado taxes at your address, so the "Wrong city?" picker also asks whether the dealer is inside your area.
Tennessee's advertising rule and Colorado's emissions-test rule conflict with what the FTC expects, and South Carolina only requires the closing fee to be disclosed in an ad. Those state pages say so, so you know to ask whether a price includes the fee.
Ohio's default doc fee now follows the 10%-of-price limit on cars under $3,980. Ohio's cap rises to $412 and Michigan's trade-in credit cap to $13,000 on January 1, 2027, and the site switches over on its own.
We now re-run reference calculations for every state each night and watch the official rate and fee pages for changes, so a changed rate is caught before it reaches your estimate.

v0.28.0 — October 2026

Wisconsin, Missouri, Nevada, Oregon and Idaho pages now explain what an advertised price has to include, so every state we cover now has this section. All five let dealers leave the doc fee out in some way, and Oregon's rule even defines the advertised price without it; federal law puts it in. The calculator assumes your price already includes the doc fee (and, in Nevada, a used car's smog check); untick either if yours doesn't.
Oregon estimates now charge a new car's four-year registration and title fee by fuel economy, plus the county registration fees in Multnomah, Washington and Clackamas.
Nevada's Governmental Services Tax now drops with the car's age, the 1% supplemental tax applies in Clark and Churchill counties (not Washoe), and plates are added.
Idaho no longer taxes a manufacturer rebate applied at the sale, and its registration now follows the car's age, with each county's admin fee and Ada County's highway district fee.
Missouri's electric-car registration is corrected to $21.25, and Wisconsin estimates show the optional electronic processing fee (up to $38).
State pages now say plainly where a state's own law lets a dealer leave the doc fee out of an advertised price, which conflicts with what the FTC expects, so you know to check. Where you can register the car yourself after the sale or have the dealer do it, the page explains your options.

v0.27.0 — October 2026

Massachusetts, Maryland, Minnesota and Indiana pages now explain what an advertised price has to include. Massachusetts and Indiana already require the doc fee in the advertised price. Maryland and Minnesota let dealers leave it out, so federal law puts it in. The calculator assumes your price already includes the doc fee; untick it if yours doesn't.
Maryland estimates add the new $6-per-tire fee on a new car's tires and the dealer's electronic titling fee (up to $20).
Indiana's $3 interim plate is now shown as a dealer charge, since the dealer pays it to the state, and the 25-cent new tire fee is added. Massachusetts's $5 title preparation charge is likewise shown as a dealer charge capped by law.

v0.26.0 — October 2026

Washington, New Jersey, Virginia and Arizona pages now explain what an advertised price has to include. New Jersey's rules already require the dealer's fees in the price. Washington, Virginia and Arizona let dealers leave the doc fee out, so federal law puts it in. The calculator assumes your price already includes the doc fee; untick it if yours doesn't.
Washington estimates are updated for 2026: the $40 title fee on dealer sales, registration by weight, plates, the EMS and lemon-law fees, and the new 8% luxury tax on the part of a price over $102,000. Service contracts are now taxed, and electric-car fees moved to renewal, where Washington charges them.
New Jersey estimates now collect four years of registration up front on a new car, as New Jersey does, plus four years of the ZEV fee on a new electric car, the 0.4% luxury surcharge at $45,000 and the new-tire fee.
Arizona's sales tax now applies the big-ticket breaks in about 30 cities (Phoenix taxes the part of a price over $14,338 at a lower city rate), and no longer taxes the doc fee or a manufacturer rebate you assign to the dealer. A used car's Vehicle License Tax now reflects its age, and Kingman's and San Tan Valley's city rates are updated.
Virginia estimates use the higher registration for cars over 4,000 lb and add the sales tax on half a service contract.

v0.25.0 — October 2026

Ohio, Georgia, North Carolina and Michigan pages now explain what an advertised price has to include. Georgia's Attorney General already requires the dealer's fees in the advertised price. Ohio and North Carolina let dealers leave the doc fee out, and Michigan has no rule either way, so federal law puts it in. The calculator assumes your price already includes the doc fee in all four; untick it if yours doesn't.
Every state page that explains advertised prices now includes a note that federal law comes first: where a state's rules let a dealer leave a fee out of the price, the FTC's rule still puts it in.
Ohio estimates add the dealer's title or registration service fee (up to $50), which Ohio's rule keeps out of the advertised price, and Franklin County's title fee is now $23.
Michigan's registration tax now follows the statute exactly: a used car pays the lower rate for its age, the tax keeps rising above $300,000, and transferring a plate replaces it at the sale with a $15 fee. Estimates also add the 50-cent title assessment, the $5 plate, the $1 lien fee and the optional $34 electronic filing fee.
North Carolina's property tax note is corrected. You do owe vehicle property tax on a car you just bought, payable when you register or within about 60 days on a limited plate. It still isn't in the calculator's total, because it depends on your county's and city's rates.

v0.24.0 — October 2026

Florida, New York, Pennsylvania and Illinois pages now explain what an advertised price has to include. Florida's own law and New York's Attorney General already require the dealer's fees in the advertised price. Pennsylvania and Illinois only let dealers leave the doc fee out, and federal law puts it back in. The calculator assumes your price already includes the doc fee in all four (and in New York, the dealer's inspection); untick either if yours doesn't.
Illinois sales tax is corrected. City and county sales taxes don't apply to cars in Illinois, so most of the state is 6.25%, the collar counties 7.25%, Cook County 8.5% for a Cook County buyer (9.75% in Chicago) and the Metro-East 6.5%. The calculator had been adding local rates that don't apply to vehicles, which overstated the tax in most of the state.
New York estimates now include every registration charge: the two-year registration by weight, the $50 MCTD fee in the 12 counties around New York City, county use taxes, the tire fee and the dealer's inspection. Extended warranties are now taxed, as New York requires.
Florida registration is corrected to the real weight-based totals ($27.60 to $45.60), and isn't charged when you transfer a plate. New cars add the state tire and battery fees.
Pennsylvania estimates add the lien fee, the $5 county fee in 27 counties and the new-tire fee, the $20 temporary plate, and an electric car's road user charge, now collected at the sale as it has been since July.
Illinois no longer charges plug-in hybrids the $100 EV fee, which the law applies only to battery-electric cars, and estimates now show the optional electronic title and registration fee (up to $35) that you can decline.

v0.23.0 — October 2026

The Texas page now explains what an advertised price has to include. Under Texas rules: freight, dealer prep and any markup. Under federal law: the doc fee and every other fee the dealer charges. Only tax, title, registration and other government fees go on top.
Texas estimates now include every state and county fee on the deal: the $10 license plate fee, the inspection fee that replaced safety inspections, your county's own registration fees, the $1 insurance check, and the state's emissions fee on used cars in emissions counties. A new car's 24-month first registration is now charged in full, and the title fee follows your county ($33 or $28).
Texas estimates also include the dealer's charges that belong in an advertised price: its inventory tax charge (estimated at 0.2% of the price) and, on a used car that needs one, the emissions test. As with California, the calculator assumes a Texas price already includes the doc fee and these charges, as federal law expects. Untick any your price doesn't cover.
Texas doesn't tax the doc fee, and the calculator no longer does either.
The $225 Texas doc fee is a presumption, not a cap. We'd been calling it a cap. A Texas dealer can charge more after filing a cost analysis with the state, and our pages now say so.

v0.22.0 — October 2026

California's new car-buying law, SB 766, took effect on October 1, and the California page now explains it. A new section lists what a dealer's advertised price has to include (any markup, anything already installed on the car, and every fee the dealer charges, the doc fee included) and what can still be added on top (tax, registration and other government fees). We checked it against the text of the law and the FTC's September 2026 pricing guidance for dealers.
California estimates now include the dealer's electronic filing fee ($37 typical), and the calculator assumes a California price already includes the doc fee, filing fee and smog check charge, as federal law expects of an advertised price. Untick any your price doesn't cover.
California used-car results now show the new 3-day right to cancel when the car is priced at $50,000 or less: how long you have, the 400-mile limit, and the most the dealer can keep as a restocking fee.
Our guide to advertised prices is updated for the FTC's September 2026 guidance, which says the doc fee and every other fee a dealer charges belong in the advertised price, and corrected where it had SB 766's details wrong.

v0.21.0 — October 2026

Missouri is live, bringing the calculator to 23 states, with a rate for every Missouri ZIP code.
In Missouri you pay the sales tax yourself, not to the dealer. You pay it at a license office when you title the car, within 30 days. That means the out-the-door figure on the dealer's sheet will be missing several thousand dollars. We include the tax, title and registration in our total and say where each is paid. Dealers are due to start collecting the tax in early 2027; the amount won't change.
Most Missouri ZIP codes have more than one rate. City taxes stop at the city limits, and fire and ambulance districts split the rest — in Columbia, living just outside the city limits takes two points off the rate. If your ZIP is one of these, you'll be asked which applies.
Missouri takes rebates off before tax. A rebate from the dealer or the manufacturer reduces what you are taxed on, as does your trade-in — friendlier than most states, where a factory rebate is still taxed.
The electric vehicle decal is prorated. Missouri charges $150 a year for an EV and $75 for a plug-in hybrid instead of fuel tax, reduced by a twelfth for every full month of the year already gone. Buy an EV in October and the first decal is $37.50.
Tax rates now show to four decimal places where the state's do. Some Missouri rates come to an eighth of a cent, such as 5.9125%, and we now store and show them exactly. Every other state's rates look the same as before.

v0.20.0 — October 2026

Wisconsin is live, bringing the calculator to 22 states. Every Wisconsin ZIP code has a real rate.
Wisconsin taxes the car where you keep it, not where you buy it. That is 5% plus a 0.5% county tax in most of the state. The City of Milwaukee adds 2% on top of Milwaukee County's 0.9%, for 7.9%. Waukesha and Winnebago counties have no county tax, so buyers there pay 5%.
The Milwaukee city line runs through ZIP codes. If yours covers both the city and a suburb like Glendale or Wauwatosa, you'll be asked which side you're on — it changes the tax by two points and the wheel tax by $41.
Manufacturer rebates are taxed in Wisconsin. Tax is worked out on the price before the rebate comes off, so a $2,000 rebate still leaves you paying tax on that $2,000. A discount from the dealer does lower it.
The title fee is $214.50, not $164.50. Wisconsin raised it in October 2025 and many calculators still show the old figure. New plates also carry a $12 fee now.
Many Wisconsin counties and cities charge a yearly wheel tax, and some charge both. In the City of Milwaukee it adds up to $71, and in Madison and Eau Claire to $80. We include it, and mark the city part as an estimate because city limits don't follow ZIP codes.

v0.19.0 — October 2026

Washington works now. Every ZIP code in the state has a real rate, where before only three did and the rest showed no tax at all. That is 716 ZIPs across all 39 counties.
Washington charges a different rate on cars than on everything else. The county public-safety tax does not apply to vehicles, so the car rate is lower than the general sales tax rate in about half the state. We now use the state's vehicle table. The three rates we had before came from the general one and were each wrong — Seattle was 10.35% when the real figure is 10.55%, and Spokane was 9% against a real 8.9%.
If your ZIP straddles the Sound Transit line, we ask which side you are on. The boundary runs through the middle of Bellevue, Kent, Redmond, Renton, Auburn and others, and it is worth over a point — on a $35,000 car that is around $490. Seventy ZIP codes are affected and they now offer you both rates to pick from rather than guessing.
Washington's county pages are live too, including King County, where the rate runs from 8.9% to 10.55% across eight different bands.
Car tax in Washington follows the dealership, not your address. Washington is one of the few states that works this way, so the figure here is what you would pay buying near home. We say so on the page.

v0.18.0 — October 2026

178 counties now have their own page. If your county charges something different from the rest of your state, there is a page for it showing the rate, what it costs on a real purchase, and the towns and ZIP codes it covers.
Not every county gets one, on purpose. All 100 North Carolina counties charge the same 3%, and 65 of Pennsylvania's 67 charge the same 6%. A page for each would say the same thing a hundred times, so counties only get one where the county actually changes your number.
Each page tells you what the next county over charges. In dollars, on the same car — useful when you live near a county line, and honest about the fact that it follows where you register rather than where you shop.
Counties that are not one rate say so. Westchester is 8.375% except in Yonkers, where it is 8.875%. Most of Arizona and California work this way too, so those pages list which rate applies where instead of giving a single county figure that would be wrong for part of the county.
New York City counties go by the names people use. Kings County is labelled Brooklyn and Richmond County is labelled Staten Island, because that is what they are called.

v0.17.0 — October 2026

New York and Nevada now have real local rates everywhere, not just in the big cities. Before this, a Brooklyn or Henderson ZIP returned no tax at all and a warning. New York now covers all 2,154 ZIP codes across its 62 counties, and Nevada all 254 across its 17.
Yonkers is the one New York city that charges more than its county. It is 8.875% against Westchester's 8.375% — half a point, or about $175 on a $35,000 car. Every other city in the state matches the county around it.
New York's commuter surcharge is already in the rate we show. The extra 0.375% that twelve downstate counties pay is built into the state's published figures, so it is counted once rather than added on top.
We corrected Washington's motor vehicle tax. The state raised it from 0.3% to 0.5% at the start of 2026 and we were still using the old figure, so Washington estimates came in about $70 low on a $35,000 car. They are right now.
Nevada and Washington charge the rate where the dealership is, not where you live. Most states go by your address; these two go by the lot you buy from. We say so on both, because it means a quote can differ if you shop out of town.
Washington still shows no local rate, on purpose. The rate there can change between one side of a city and the other, and the state publishes a separate set of figures for vehicles than for everything else. We would rather say we do not know yet than show a number that could be $700 off.

v0.16.0 — October 2026

Maryland and Minnesota are live, bringing the calculator to 21 states.
Minnesota treats rebates better than almost anywhere. A manufacturer rebate comes off before tax is calculated, and so does an EV credit taken as a down payment at the dealership — though the same credit claimed later on your tax return does not. Minnesota also does not tax the doc fee.
Minnesota's registration is the number to watch. It is based on your car's base sticker price and runs about $640 a year on a $40,000 vehicle, falling as the car ages. It is due in full when you buy. One quirk: that calculation uses base MSRP only, so options and destination are excluded — even though both are taxed.
Maryland taxes rebates but not discounts. A factory rebate is part of what you are taxed on; a discount the dealer gives you is not. Maryland registration is also bracketed by vehicle weight, and crossing 3,700 pounds adds $71 a year.
Maryland's $3,000 electric vehicle credit is not a discount at the dealership. It arrives as a refund check weeks later and depends on the state having funds available, so we explain it rather than subtracting it from your total.

v0.15.0 — October 2026

Every state now has focused pages for the questions people actually ask. Sales tax, doc fees, registration and title charges, and — where a state's rule is unusual — trade-ins, each on its own page with the statute behind it and a worked example in that state's real rate.
Shared links now show a proper preview. Sending a page to someone renders a card rather than a bare URL.
Added a guide for AI assistants. If a chatbot cites our figures, it can now also pick up the caveats that belong with them — which numbers come from a statute and which are drawn from reported deals.
States we have not researched yet are no longer listed in search. They still explain how that state works, but they carry no verified local rates, so they stay out of search results until the research is done.

v0.14.0 — October 2026

Massachusetts and Indiana are live. That brings the calculator to 19 states.
Massachusetts does not tax dealer sales on book value. The state has a reputation for it, and the rule is real — but it applies only when you buy privately. Buy from a dealer registered with the state and you are taxed on the price you negotiated. Massachusetts registration also runs two years rather than one, and transferring a plate you already own costs $25 instead of $60, so we ask whether you are transferring.
Indiana taxes manufacturer rebates. The state treats a rebate as a form of payment rather than a discount, so the tax is figured before it comes off. Indiana also requires the doc fee to be inside the advertised price — if you are working from an advertised number, it is already in there.
Corrected Indiana's doc fee ceiling to $261.72. We were carrying $251, which was last year's figure. Indiana re-indexes it every July.
Ohio's Warren County moved to 7.25%. The change took effect October 1 and is now reflected for Mason, Lebanon, Springboro and the rest of the county.

v0.13.0 — September 2026

Georgia, North Carolina and Virginia are live. All three use something other than an ordinary sales tax, and each treats your trade-in and rebates differently, so the numbers are not interchangeable between them.
Virginia gives no credit for a trade-in. Tax is calculated on the full price even when you trade a car in — on a $40,000 car with a $15,000 trade that is roughly $622 more than a state that allows the credit. Virginia also sets a $75 floor on the tax, which matters on inexpensive used cars.
Georgia only subtracts a manufacturer rebate on a new car. Buy used from a Georgia dealer and the rebate does not lower what you are taxed on. Georgia also requires dealers to build the doc fee into the advertised price rather than adding it afterward.
North Carolina taxes the doc fee. Its Highway Use Tax statute reaches the fee by referring to another law by number, which is easy to miss, so quotes that leave it out come in low.
Where plates are not part of the deal, we say so. Georgia dealers are not required to register the car for you, so the tag is explained rather than added to the total — the same approach we took for Ohio. North Carolina and Virginia dealers do handle registration, so it is included there.

v0.12.0 — September 2026

Ohio is live. All 88 counties, resolved by ZIP, with rates from 6.50% to 8.00%. Ohio taxes you at the rate for the county you live in rather than where the dealership sits, so the number follows your address. Regional transit taxes are included — they reach vehicle sales through a separate part of the tax code that is easy to miss.
Trade-ins work differently in Ohio. The state only credits your trade against the taxable price when you are buying a new vehicle. On a used or certified pre-owned car, Ohio taxes the full price and your trade does not reduce it. The calculator now shows this instead of quietly applying a credit that would not exist.
Ohio doc fees are not taxed. A 2023 change to the tax code exempted them. Many published sources still describe the older rule, so quotes built from those will overstate the tax.
Ohio plates are not in the total. Ohio dealers handle the title, but you register at a deputy registrar yourself, so plates are not part of a dealer's out-the-door figure. We explain what to budget for instead of adding a number the dealer will not charge you.

v0.9.0 — July 2026

Doc fee corrections. A statute-level research pass corrected Mississippi's doc fee cap (a widely repeated "7 districts" claim traced back to unverified copied text — the real regulation sets a flat $425 cap) and Rhode Island's (previously listed as uncapped; actually capped at $400). Citations and sources refreshed for 16 more states.
Foundational sourcing groundwork laid for the next 40 states — official tax and doc fee data sources on file for future builds.

v0.8.0 — July 2026

Illinois is live. Full statewide coverage — all 102 counties, origin-based vehicle tax, uncapped trade-in credit, and the correct $377.63 doc fee cap.
Flat-tax states now work everywhere. Texas, Idaho, and Oregon compute correctly for any ZIP in the state, not just a handful of metros — those states have one statewide rate, so there was never a reason to limit them. Every ZIP now resolves to the right state even before we have full local rate data for it.

v0.7.0 — July 2026

Guides. A new section of plain-English explainers on car fees and pricing rules. First up: what the FTC's struck-down CARS Rule, California's SB 766, and the doc-fee dispute actually mean for the price a dealer quotes you.

v0.5.0 — July 2026

Upload your quote, skip the typing. Add a photo or PDF of your written quote or buyer's order to a submission — we read it and pre-fill the numbers (you verify every one). Files are never displayed publicly, are stored off the web, and are deleted after review.
Document-verified reports are live. A moderator checks your uploaded paperwork against your entered numbers; verified reports carry the gold badge and weigh highest in the averages.

v0.4.0 — July 2026

Real California truck weight fees. Pickups and light trucks now use the actual unladen-weight bracket schedule (VC §9400 — two-axle and three-plus-axle tables, plus the separate electric-commercial schedule). Enter the curb weight from the door jamb, or leave it blank for a typical half-ton estimate.
Heavy commercial (CVRA) supported — declared gross weight brackets from $332 (10,001–15,000 lbs) to $2,064 (75,001–80,000 lbs) per VC §9400.1, plus the $3 Cargo Theft Interdiction Program fee. CVRA vehicles correctly skip the TIF — they pay weight fees instead.

v0.3.0 — July 2026

California used-car fees, dealer-desk accurate. The CA used path now runs the same decision tree a franchise dealer's fee desk uses: enter the plate expiration month and the calculator knows whether registration, VLF, TIF, and county fees ride along with the deal (expired or expiring within 120 days) or wait for your next renewal.
Out-of-state cars handled. No current California plates? Full first registration is due and a smog test is required regardless of the car's age.
Smog, itemized correctly. Used vehicles four or fewer model years old pay an $8 exemption fee — no $50 test. Five or older: $50 test + $8.25 certificate. Pre-1976 classics: no smog charges at all. Smog abatement now uses the real tier schedule ($20/$25).
Used deals get the $15 DMV transfer fee instead of the $28 new-title fee, and used trucks get California's $80 weight fee.

v0.2.0 — July 2026

“My price already includes…” — dealers increasingly fold fees into the advertised price (FTC enforcement posture; California's total-price law effective Oct 1, 2026). Tell the calculator your price already covers the doc fee or the emissions testing charge and nothing gets double-counted — tax math adjusts too.
Used-vehicle emissions testing charge (California) — the $50 smog-check charge now appears on used-car estimates. It's set under CA Bureau of Automotive Repair rules, so it's labeled “Capped by law,” not negotiable. EVs exempt.
California's 120-day registration rule — buying used with registration that's good for more than 120 days past your purchase? Renewal fees (registration, CHP, VLF, TIF, county fees) aren't due at sale. Check the box and the estimate drops accordingly.
California ZIP coverage expanded from seed data to all 2,593 ZIP codes with current CDTFA rates, refreshed quarterly.

v0.1.0 — October 2026

OTD calculator with full rules engines for CA, TX, FL, WA, NY, ID, AZ, NV, and OR — trade-in credit, rebate taxation, doc fee caps, value-based registration, and EV fees per state.
Shareable calculation permalinks, printable dealer worksheet, and email-me-this.
Real-price database: itemized deal and quote submissions with add-on and F&I line items, moderation, and anonymous display.
Reference pages: doc fees for all 50 states with statute citations; registration fee stacks per active state.