estimatetax
2026 · 58 parameters · Each dated

Where our numbers come from

Every tax parameter used anywhere on this site, the document it was read from, and the date it was checked. This is the page that makes the rest of the site checkable rather than trustworthy.

Written and edited by Pablo Ruiz QuinteroSources checked September 1, 2026Compiled 2026-09-02

Every parameter, its source and its date

ParameterValueSource documentChecked
Federal income tax brackets7 bands, 10.00%–37.00%IRS Rev. Proc. 2025-32, § 3.01, Tables 1-42026-08-31
Standard deduction$16,100 single · $32,200 jointIRS Rev. Proc. 2025-32, § 3.142026-08-31
Social Security rate and wage base6.20% up to $184,500SSA, Contribution and Benefit Base 2026; IRS Topic no. 7512026-08-31
Medicare rate1.45%, no ceilingSSA, Contribution and Benefit Base 2026; IRS Topic no. 7512026-08-31
Capital gains, QBI, EITC, Child Tax CreditSee each calculatorIRS Rev. Proc. 2025-32, §§ 3.03, 3.05, 3.06, 3.26, 3.312026-09-02
Provisional income, NIIT, passive losses, safe harbourStatutory, not indexedIRC §§ 86(c), 469(i), 1411(b), 6654(d), 168(c); Treas. Reg. § 31.3402(g)-12026-09-02
County property tax ratesMedian 0.84% across 3,132 countiesUS Census Bureau, American Community Survey 5-year estimates2026-08-31
Alabama income tax3 brackets to 5.00%Alabama DOR, FAQ "What is Alabama's Individual Income Tax Rate?" and Withholding Tax Tables (01-2026)2026-09-01
Alaska income taxNo income taxAlaska Department of Revenue2026-09-01
Arizona income taxFlat 2.50%Arizona DOR, Individual Income Tax Highlights and IRC conformity2026-09-01
Arkansas income tax2 brackets to 3.90%Arkansas DFA, rate tables and 2026 Form AR1000ES2026-09-01
California income tax10 brackets to 13.30%California FTB, 2026 Instructions for Form 540-ES2026-09-01
Colorado income taxFlat 4.40%Colorado DOR, Individual Income Tax Guide (January 2026)2026-09-01
Connecticut income tax7 brackets to 6.99%CT DRS, IP 2026(1) Income Tax Withholding Requirements and the 2026 Form CT-W42026-09-01
Delaware income tax7 brackets to 6.60%Delaware Department of Revenue2026-09-01
District of Columbia income tax7 brackets to 10.75%DC Office of Tax and Revenue, Tax Year 2026 Pertinent Data Book2026-09-01
Florida income taxNo income taxFlorida Department of Revenue2026-09-01
Georgia income taxFlat 4.99%Office of the Governor of Georgia, press release of 11 May 2026 on HB 4632026-09-01
Hawaii income tax12 brackets to 11.00%Hawaii DOT, tax tables and rate schedules for years beginning after 31 Dec 2024, and the 2026 payroll update2026-09-01
Idaho income taxFlat 5.30%Idaho State Tax Commission, Individual Income Tax Rate Schedule2026-09-01
Illinois income taxFlat 4.95%Illinois DOR, Booklet IL-700-T (2026) and bulletin FY 2026-152026-09-01
Indiana income taxFlat 2.95%Indiana DOR, Departmental Notice #1 and "Rates, Fees & Penalties"2026-09-01
Iowa income taxFlat 3.80%Iowa DOR, "IDR Announces 2026 Individual Income Tax and Interest Rates" and the withholding formula effective 1 January 20262026-09-01
Kansas income tax2 brackets to 5.58%Kansas DOR, 2026 Form K-40ES and withholding guide KW-1002026-09-01
Kentucky income taxFlat 3.50%Kentucky DOR, "Kentucky DOR Announces 2026 Standard Deduction" and withholding formula 42A003 (10-2025)2026-09-01
Louisiana income taxFlat 3.00%Louisiana DOR, income tax reform FAQ2026-09-01
Maine income tax3 brackets to 7.15%Maine Department of Revenue2026-09-01
Maryland income tax10 brackets to 6.50%Comptroller of Maryland, 2026 withholding guide and 2025 legislative session tax alert2026-09-01
Massachusetts income tax2 brackets to 9.00%Mass.gov, "Massachusetts 4% Surtax on Taxable Income" and Circular M effective 1 January 20262026-09-01
Michigan income taxFlat 4.25%Michigan Treasury, "State Individual Income Tax Rate for 2026 Tax Year Determined" and withholding guide 446 (Rev. 02-26)2026-09-01
Minnesota income tax4 brackets to 9.85%Minnesota DOR, press release of 16 December 2025 on the 2026 brackets2026-09-01
Mississippi income tax2 brackets to 4.00%Mississippi DOR, Pub 89-700 — Withholding Income Tax Tables and Employer Instructions (rev. 01-2026)2026-09-01
Missouri income tax8 brackets to 4.70%Missouri DOR, 2026 Missouri Withholding Tax Formula2026-09-01
Montana income tax2 brackets to 5.65%Montana DOR2026-09-01
Nebraska income tax3 brackets to 4.55%Nebraska DOR, Circular EN — withholding effective 1 January 20262026-09-01
Nevada income taxNo income taxNevada Department of Revenue2026-09-01
New Hampshire income taxNo income taxNew Hampshire Department of Revenue2026-09-01
New Jersey income tax7 brackets to 10.75%NJ Division of Taxation, 2026 Form NJ-1040-ES — Rate Schedules2026-09-01
New Mexico income tax6 brackets to 5.90%New Mexico Taxation and Revenue, Personal Income Tax Rates2026-09-01
New York income tax9 brackets to 10.90%NYS Dept. of Taxation and Finance, NYS-50-T-NYS (1/26) — Annual Tax Rate Schedule 20262026-09-01
North Carolina income taxFlat 3.99%NCDOR, Tax Rate Schedules2026-09-01
North Dakota income tax3 brackets to 2.50%North Dakota Department of Revenue2026-09-01
Ohio income tax2 brackets to 2.75%Ohio Revised Code § 5747.02 and the Legislative Service Commission analysis of HB 962026-09-01
Oklahoma income tax4 brackets to 4.50%Oklahoma Tax Commission, Packet OW-2 (rev. 11-2025) — Table 7, Annual Payroll Period2026-09-01
Oregon income tax4 brackets to 9.90%Oregon DOR, Oregon Withholding Tax Formulas 150-206-436 (rev. 31 Dec 2025) and Publication OR-ESTIMATE 20262026-09-01
Pennsylvania income taxFlat 3.07%PA Department of Revenue, Personal Income Tax2026-09-01
Rhode Island income tax3 brackets to 5.99%Rhode Island Department of Revenue2026-09-01
South Carolina income tax2 brackets to 5.21%SCDOR, "Information about H. 4216"2026-09-01
South Dakota income taxNo income taxSouth Dakota Department of Revenue2026-09-01
Tennessee income taxNo income taxTennessee Department of Revenue2026-09-01
Texas income taxNo income taxTexas Department of Revenue2026-09-01
Utah income taxFlat 4.50%Utah State Tax Commission, Publication 14 — Withholding Tax Guide2026-09-01
Vermont income tax4 brackets to 8.75%Vermont Department of Taxes, GB-1210 — Income Tax Withholding Instructions, Tables and Charts 2026 (annual table)2026-09-01
Virginia income tax4 brackets to 5.75%Virginia Tax, "New Virginia Tax Laws" and the 2026 Form 760ES2026-09-01
Washington income taxNo income taxWashington Department of Revenue2026-09-01
West Virginia income tax5 brackets to 4.82%West Virginia Department of Revenue2026-09-01
Wisconsin income tax4 brackets to 7.65%Wisconsin DOR, "Tax Rates" and the 2026 Form 1-ES Instructions2026-09-01
Wyoming income taxNo income taxWyoming Department of Revenue2026-09-01

Why this table exists

Almost nothing in this category publishes its sources. When we audited it, sites ranking on the first page for "2026 income tax calculator" were serving the previous year's standard deduction while linking to the correct IRS page from the same screen — and there was no way for a reader to tell.

So every figure here names its document and its date. Not the department's home page: the specific publication, with a link, so you can open it and check the number rather than take our word for it.

The dates matter as much as the sources. State legislatures change rates on their own calendars and frequently backdate, so a figure verified in March and a figure verified in September carry different amounts of confidence — and a single site-wide "last updated" would be true of only one of them.

Of 37 states reviewed against their own department of revenue, 21 matched the compiled sources everyone uses and 12 did not. Those corrections are listed on the changelog with what changed and why.

Where to go next

How the figures are verifiedThe method behind the table.Tax data changelogEvery change to these figures, dated.CorrectionsWhat we got wrong and what fixed it.Are tax estimators accurate?What we found auditing the category.

Questions

Where do your federal figures come from?
The IRS revenue procedure for the tax year, read off the document itself rather than off a summary of it. The citation and link are in the table above, with the date we checked.
Where do state figures come from?
Each state's own department of revenue publication, read one state at a time. The table names the specific document for each, not the department home page.
What if a figure has not been verified?
The page says so. A figure read off a primary source and a figure taken from a compilation are marked differently throughout the site, because "we have not looked" and "it does not exist" are different claims.
How often is this table updated?
Whenever a figure changes. Each row carries its own date rather than a site-wide timestamp, and every change is recorded in the tax data changelog.