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FLFlorida TaxCalculator

Methodology

This page documents exactly how our calculators compute 2026 take-home pay. We surface every assumption so the math is auditable.

Federal income tax brackets (2026)

We use 2026 projected ordinary-income brackets indexed forward from the 2025 IRS bracket structure (Rev. Proc. 2024-40) using a conservative ~2.8% inflation adjustment. Single-filer brackets used:

  • 10% up to $12,000
  • 12% to $48,800
  • 22% to $104,100
  • 24% to $198,800
  • 32% to $252,500
  • 35% to $631,500
  • 37% above $631,500

Married filing jointly, head of household, and married filing separately use the corresponding 2026-projected brackets. Final 2026 brackets are published by the IRS in late 2025; we will update these constants when the official release is available.

Standard deduction (2026)

  • Single / MFS: $15,800
  • MFJ: $31,600
  • Head of household: $23,700

FICA constants (2026)

  • Social Security: 6.2% up to the wage base of $181,800 (estimated)
  • Medicare: 1.45% on all wages
  • Additional Medicare: 0.9% on wages above $200,000 single / $250,000 MFJ / $125,000 MFS

Self-employment

SE tax = 15.3% on 92.35% of net SE earnings, with the Social Security portion capped at the 2026 wage base after counting other W-2 wages. Half of SE tax is deductible above the line. Additional Medicare 0.9% applies above the same single/MFJ thresholds, on combined SE base plus W-2 wages.

Bonus / supplemental withholding

Federal supplemental withholding: 22% on bonuses up to $1M per employee per year; 37% above $1M. We apply FICA in full and the SS wage cap correctly given a year-to-date wages input.

State comparisons

For Florida-vs-X comparisons, we use 2025 published bracket structures from each state\'s Department of Revenue, applied against an income net of state-level standard deduction. For New York City, we layer the resident surtax on top of NY state. These are simplified single-filer effective-rate calculations — they do not model credits, AMT, locality surtaxes beyond NYC, or filing-status interactions in full.

What the calculator does not model

  • State of prior residence transitional withholding for mid-year movers.
  • Credits (CTC, EITC, savers credit, premium tax credit, etc.).
  • Itemized deductions above the standard deduction.
  • AMT.
  • Multi-state allocation of W-2 wages or RSU income.
  • Roth 401(k) contributions (we model only pretax 401(k)).
  • HSA limits (we accept input but do not enforce annual maximums).
  • Property tax (handled qualitatively in editorial pages).

For complex situations involving any of the above, our calculator should be treated as a planning estimate, not a substitute for tax software or a CPA.