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Indiana Bonus Tax Calculator

Estimate take-home pay on a bonus, using the federal flat-rate supplemental withholding method

Estimate only — not tax advice. Federal tax on the bonus uses the flat 22% supplemental withholding rate (37% on cumulative supplemental wages over $1,000,000/year) — the alternative "aggregate method" some employers use instead is not modeled. FICA and any state SDI/PFL are computed as the difference between your regular income with and without the bonus added, so the Social Security wage cap applies correctly. State tax on the bonus is a marginal-bracket estimate, not necessarily any special state supplemental rate. See methodology below for source and last-verified date.

Calculating a regular paycheck? Try our Indiana paycheck calculator →

Paid hourly? Try our Indiana hourly paycheck calculator →

How Indiana Paycheck Tax Is Calculated (2026)

Source: Indiana Department of Revenue
Flat state rate2.95%
state_tax = max(0, gross_income - 0) × 0.0295

Federal Tax & FICA (shared across all states)

Filing statusStandard deduction
Single$16,100
Married Filing Jointly$32,200
Head of Household$24,150
Federal brackets (all filing statuses)10% / 12% / 22% / 24% / 32% / 35% / 37%
Social Security6.2% up to $184,500 wage base
Medicare1.45% on all wages, +0.9% above $200,000 single/HoH, $250,000 MFJ

⚠️ Indiana's married-filing-jointly and head-of-household state brackets have not yet been independently verified against the primary source above — this calculator uses Indiana's single-filer brackets as an estimate when those statuses are selected.

⚠️ Indiana's 92 counties each levy their own local income tax (resident-based), ranging 0.50%-3.38%. Marion (Indianapolis), Allen (Fort Wayne), St. Joseph (South Bend), Elkhart, Hamilton, Hendricks, and Tippecanoe Counties are now computed via the selector above (applied to the same IN taxable-income base as the state tax itself, not gross); the other 85 Indiana counties are still not covered — this is often the largest single layer of any state on this calculator, so double-check your county's rate if it isn't listed.

Guideline version 2026-IN-v1 · Last verified 2026-07-26

Indiana Paycheck Calculator FAQ

What is Indiana's state income tax rate?

Indiana charges a flat 2.95% rate for tax year 2026.

How much is take-home pay on $65,000 in Indiana?

On a $65,000 gross salary, a single filer in Indiana takes home roughly $52,490/year (about $4,374.17/month) after federal tax, FICA, and state tax — before any local tax.

What deductions does Indiana apply before taxing my income?

Indiana applies no standard deduction — the full rate applies to gross wages, before the flat 2.95% rate. See the "How Indiana Paycheck Tax Is Calculated" section above for the exact formula.

Does this estimate change if I'm married or have dependents?

This calculator uses single-filer figures only (v1 scope). Married filing jointly typically uses different federal and Indiana state brackets and a larger standard deduction — your actual take-home pay will differ. Dependents can also reduce federal withholding via the W-4. Check Indiana Department of Revenue's married-filing-jointly tables for a precise figure.

Does this calculator include Indiana local or city income tax?

Indiana's 92 counties each levy their own local income tax (resident-based), ranging 0.50%-3.38% — often larger than any single layer in this calculator's other states. Not computed here; check your county's rate.

Methodology & Source

Indiana state tax figures sourced from Indiana Department of Revenue (https://www.in.gov/dor/), citing Ind. Code § 6-3-2-1 — flat 2.95% for 2026. Federal brackets, standard deductions (single/MFJ/HoH), and FICA constants sourced from the IRS (Revenue Procedure 2025-32; married-filing-jointly Additional Medicare threshold of $250,000 is a separate, unindexed statutory figure). Indiana's married-filing-jointly and head-of-household figures are not yet independently verified and currently fall back to single-filer brackets — see the caveat in the formula section above.

Local tax figures sourced from Indiana Department of Revenue, Departmental Notice #1 (county tax rate chart). Rates cross-checked against two independent secondary sources 2026-07-29 (countrytaxcalc.com, tax-rates.org via search synthesis) for the 7 counties listed; the official DOR PDF (in.gov/dor/files/dn01.pdf) could not be parsed by available tooling in this environment, so these rely on secondary-source cross-checks only, same fallback as documented elsewhere on this site (e.g. tax.ohio.gov). Lake County was excluded — uniquely among Indiana's 92 counties, it currently levies no local income tax. Vanderburgh, Vigo, and Monroe Counties were excluded due to conflicting rates across sources (e.g. Vanderburgh cited as both 1.20% and 1.75%) rather than guess between them. Indiana has 92 counties total; only the 7 largest with agreeing sources are covered below.

Bonus federal withholding uses the flat supplemental-wage rate (22%, 37% above $1,000,000 cumulative supplemental wages/year), per IRS Publication 15 (Circular E), Employer's Tax Guide, 2026 edition — the alternative "aggregate method" is not modeled.

This is an estimate based on standard single-filer federal, FICA, and IN state calculations. Actual withholding may differ based on your W-4 elections, pre-tax deductions, and other factors.

Guideline version: 2026-IN-v1 · Effective: 2026-01-01 · Last verified: 2026-07-26