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Lemon Law Calculator & Free Tools

Updated By the LemonLawMap Editorial Team Sources

The short answer

Six free tools cover each step of a lemon law claim: whether your repairs count, how long you have, what to send the manufacturer, which records you need, what a buyback could pay and how your state compares. They apply the verified rules of 50 states, run entirely in your browser and never ask for your name, phone number or email.

A lemon law claim turns on a handful of numbers: the date the vehicle was delivered, the mileage at each repair visit, the days it spent at the dealer and the price you paid. Each state then applies its own tests, deadline and refund formula to those numbers. Doing that math by hand is where most owners make mistakes, such as counting a visit that fell outside the window or using another state’s mileage formula.

These tools do the math with the same rules engine as our free lemon law checker, which combines the timeline, deadline and buyback estimate into one report. Use a single tool when you have one question, or the checker when you want the whole picture.

Choose a tool

Works today for 50 verified states: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming. More states are added as each one is verified.

Buyback & Refund Calculator

Estimate a repurchase with your state’s mileage deduction, step by step.

Estimate my refund

Filing Deadline Finder

Turn your state’s deadline rule into a calendar date with days left.

Find my deadline

Repair Timeline Builder

See which repair visits count toward your state’s tests.

Build my timeline

Notice Letter Generator

Write the notice to the manufacturer your state requires, ready to mail.

Write my letter

Repair Records Checklist

Tick off every document a lemon law claim needs.

Open the checklist

State Comparison Tool

Compare tests, windows, deductions and deadlines side by side.

Compare states

Which lemon law tool do you need?

Lemon law tools by question
Your questionToolWhat you need
How much could a buyback pay?Buyback & Refund CalculatorPrice and two mileage readings
How long do I have?Filing Deadline FinderDelivery date, mileage, warranty term
Do my repairs count?Repair Timeline BuilderDelivery date and repair orders
What do I send the manufacturer?Notice Letter GeneratorVehicle details and repair history
Do I have the right paperwork?Repair Records ChecklistYour folder of documents
How does my state compare?State Comparison ToolNothing

Every tool shares your answers with the others on this device only, so you type your dates once.

Use the tools in this order

  1. Gather your records. The checklist lists the 19 documents that prove your case. Repair orders matter most: each one is a dated, mileage-stamped record of a repair attempt.
  2. Build the timeline. Enter each repair visit. The builder marks which visits fall inside your state’s window and how close you are to each test.
  3. Find your deadline. Most states set a firm date to file a claim, request arbitration or sue. Missing it can end a lemon law claim even when the car clearly qualifies.
  4. Send written notice. In 38 of the 50 verified states, written notice to the manufacturer is part of the process. The letter generator fills in your state’s citation and mailing method.
  5. Estimate the buyback. Once a test is met, the calculator shows what a refund could look like after your state’s deduction for use.

Lemon law rules the tools apply, by state

Each tool loads the rules for the state you choose. This summary shows how much they differ: repair tests run from 3 to 4 attempts, and protection windows from 12 to 600 months.

Key lemon law rules in the 50 verified states
StateRepair testWindowDeadline
Alabama3 + notice24 mo / 24,000 mi3 years from delivery
Alaska3 + notice12 mo, or warranty if shorterDemand within 60 days after window
Arizona4 + notice24 mo / 24,000 mi, or warranty if shorter6 months after window
Arkansas3 + notice24 mo / 24,000 miNot stated in the AG guide
California418 mo / 18,000 mi, or warranty if shorterDepends on the manufacturer
Colorado3 + notice24 mo / 24,000 mi30 months from delivery
Connecticut424 mo / 24,000 miNot set in the chapter
Delaware4 + notice12 mo, or warranty if shorterNot set in the chapter
District of Columbia424 mo / 18,000 mi4 years from delivery
Florida3 + notice24 mo60 days after 24 mo
Georgia3 + notice24 mo / 24,000 mi12 months after rights period
Hawaii3 + notice24 mo / 24,000 mi, or warranty if shorter1 yr after rights period
Idaho4 + notice24 mo / 24,000 mi, or warranty if shorter3 years from delivery
Illinois4 + notice12 mo / 12,000 mi18 months from delivery
Indiana418 mo / 18,000 mi2 years from first report
Iowa3 + notice24 mo / 24,000 mi, or warranty if shorter1 yr after rights period
Kansas4 + notice12 mo, or warranty if shorterNot set in the act
Kentucky4 + notice12 mo / 12,000 mi2 years from delivery
Louisiana412 mo, or warranty if shorter3 yrs from purchase or 1 yr after warranty
Maine3 + notice36 mo / 18,000 mi, or warranty if shorter3 yrs or warranty, whichever first
Maryland4 + notice24 mo / 18,000 mi3 years from delivery
Massachusetts312 mo / 15,000 miArbitration within 18 months of delivery
Michigan4 + notice12 mo, or warranty if shorterNone set in the act
Minnesota4 + notice24 mo, or warranty if shorter3 years from delivery
Mississippi3 + notice12 mo, or warranty if shorterEarlier of warranty + 1 yr or 18 mo
Missouri4 + notice12 mo, or warranty if shorterEarlier of warranty + 6 mo or 18 mo
Montana4 + notice24 mo / 18,000 miNot set in the part
Nebraska4 + notice12 mo, or warranty if shorterEarlier of warranty + 1 yr or 2 yrs
Nevada4 + notice12 mo, or warranty if shorter18 months from delivery
New Hampshire3600 mo, or warranty if shorter1 yr after warranty or final repair
New Jersey3 + notice24 mo / 24,000 miLetter within 2 yrs / 24,000 mi
New Mexico4 + notice12 mo, or warranty if shorter18 months from delivery
New York424 mo / 18,000 mi4 years from delivery
North Carolina4 + notice24 mo / 24,000 miNot set in the Act
North Dakota4 + notice12 mo, or warranty if shorter6 mo after earlier of warranty or 18 mo
Ohio312 mo / 18,000 mi5 years from delivery
Oklahoma4 + notice12 mo, or warranty if shorterNot set in the statute
Oregon3 + notice24 mo / 24,000 mi1 yr after 2 yrs / 24,000 mi
Pennsylvania312 mo / 12,000 mi, or warranty if shorterNot stated in official guides
Rhode Island412 mo / 15,000 miEarlier of 3 yrs or 2 yrs after 15,000 mi
South Carolina3 + notice12 mo / 12,000 mi3 years from delivery
South Dakota4 + notice24 mo / 24,000 mi3 years from delivery
Texas424 mo / 24,000 mi, or warranty if shorter6 mo after window
Utah412 mo, or warranty if shorterNot set in the chapter
Vermont3600 mo, or warranty if shorter1 year after warranty ends
Virginia318 mo18-month rights period (can extend)
Washington424 mo / 24,000 mi30 months from delivery
West Virginia3 + notice12 mo, or warranty if shorter1 year after warranty ends
Wisconsin412 mo, or warranty if shorter36 months from delivery
Wyoming4 + notice12 moNot set in the section

How the tools calculate, and their limits

Each state’s rules live in a data file built from the statute or the official state guide, with the section number beside each rule and the date it was last verified. The tools read those files, so a rule changes in one place and every tool follows.

  • Dates are calendar dates. Months are added as calendar months, so a deadline counted from August 31 lands on the last day of February.
  • Mileage limits are dated from your odometer readings. If you have not reached a limit yet, the date is projected from your average daily driving and marked estimated.
  • The tools cannot judge facts. Whether a defect substantially impairs the vehicle, or is covered by the warranty, is decided by the arbitrator, hearing officer or court.

Results are estimates for planning, not legal advice. Your state agency or a lemon law attorney can confirm them against your documents.

Your data stays on your device

The tools run in your browser. Nothing you type, and no photo of a repair order you attach, is sent to our servers. Answers are saved in your browser’s local storage so the tools can share them, and you can clear them at any time with the “Start over” or “Clear ticks” buttons. There is no sign-up and no lead form.

Frequently asked questions

How do I calculate my lemon law refund?

Start with what you paid for the vehicle, add the charges your state allows (such as taxes and fees), then subtract your state’s deduction for use. Most formulas multiply the price by miles driven and divide by 100,000 or 120,000. The Buyback Calculator applies your state’s version step by step.

Are these lemon law calculators free?

Yes. Every tool is free, needs no account and does not collect your contact details.

Which states do the tools cover?

50 verified states: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming. More states are added as each one is verified against official sources.

Are the results legal advice?

No. The tools apply published rules to the numbers you enter. Your state agency or an attorney can confirm the result against your documents.

Sources

Checked on October 13, 2026. Read how we verify every rule in our editorial policy.

  1. Alabama: Ala. Code §§ 8-20A-1 to 8-20A-6
  2. Alaska: Alaska Stat. §§ 45.45.300–45.45.360
  3. Arizona: Ariz. Rev. Stat. §§ 44-1261 to 44-1265
  4. Arkansas: Act 297 of 1993
  5. California: Cal. Civ. Code § 1790 et seq.; Tanner Act, § 1793.22
  6. Colorado: C.R.S. §§ 42-10-101 to 42-10-110 (as amended by SB 24-192)
  7. Connecticut: Conn. Gen. Stat. §§ 42-179 to 42-190
  8. Delaware: 6 Del. C. §§ 5001–5009
  9. District of Columbia: D.C. Code §§ 50-501 to 50-509
  10. Florida: Fla. Stat. ch. 681
  11. Georgia: O.C.G.A. § 10-1-780 et seq.
  12. Hawaii: Haw. Rev. Stat. ch. 481I
  13. Idaho: Idaho Code §§ 48-901 to 48-913
  14. Illinois: 815 ILCS 380
  15. Indiana: Ind. Code § 24-5-13
  16. Iowa: Iowa Code ch. 322G
  17. Kansas: K.S.A. 50-645, 50-646
  18. Kentucky: KRS 367.840 to 367.846; 367.860 to 367.870
  19. Louisiana: La. R.S. 51:1941–1948
  20. Maine: 10 M.R.S. §§ 1161–1169
  21. Maryland: Md. Code, Com. Law § 14-1501 et seq.
  22. Massachusetts: Mass. Gen. Laws ch. 90, § 7N½
  23. Michigan: Mich. Comp. Laws §§ 257.1401–257.1410
  24. Minnesota: Minn. Stat. § 325F.665
  25. Mississippi: Miss. Code §§ 63-17-151 to 63-17-165
  26. Missouri: Mo. Rev. Stat. §§ 407.560–407.579
  27. Montana: Mont. Code Ann. §§ 61-4-501 to 61-4-533
  28. Nebraska: Neb. Rev. Stat. §§ 60-2701 to 60-2709
  29. Nevada: NRS 597.600 to 597.688
  30. New Hampshire: N.H. RSA 357-D:1 to 357-D:12
  31. New Jersey: N.J.S.A. 56:12-29 et seq.
  32. New Mexico: NMSA 1978 §§ 57-16A-1 to 57-16A-9
  33. New York: N.Y. Gen. Bus. Law § 198-a
  34. North Carolina: N.C. Gen. Stat. §§ 20-351 to 20-351.10
  35. North Dakota: N.D. Cent. Code §§ 51-07-16 to 51-07-22
  36. Ohio: Ohio Rev. Code §§ 1345.71–1345.78
  37. Oklahoma: 15 Okla. Stat. §§ 901, 901.1
  38. Oregon: ORS 646A.400 to 646A.418
  39. Pennsylvania: 73 P.S. § 1951 et seq. (Act 28 of 1984)
  40. Rhode Island: R.I. Gen. Laws §§ 31-5.2-1 to 31-5.2-14
  41. South Carolina: S.C. Code §§ 56-28-10 to 56-28-110
  42. South Dakota: S.D. Codified Laws §§ 32-6D-1 to 32-6D-11
  43. Texas: Tex. Occ. Code ch. 2301, subch. M
  44. Utah: Utah Code §§ 13-20-1 to 13-20-8
  45. Vermont: 9 V.S.A. §§ 4170–4181
  46. Virginia: Va. Code §§ 59.1-207.9 to 59.1-207.16:1
  47. Washington: Rev. Code Wash. ch. 19.118
  48. West Virginia: W. Va. Code §§ 46A-6A-1 to 46A-6A-9
  49. Wisconsin: Wis. Stat. § 218.0171
  50. Wyoming: Wyo. Stat. § 40-17-101

Lemon laws by state

Full guides for every verified state.

Read the guide

How lemon law works

Plain-English guides to each step.

Read the guide

Lemon law buyback explained

How repurchases work from offer to payoff.

Read the guide

Lemon law deadlines

How time limits work across states.

Read the guide

LemonLawMap provides general information about state lemon laws, not legal advice. We are not a law firm and no attorney-client relationship is formed by using this site. Read our full disclaimer.