Tax Rates

Tax Rate Reference for Federal Brackets, LTCG, and NIIT Thresholds

Review current and projected federal tax brackets, state overlays, long-term capital gains rates, NIIT thresholds, and filing-status differences used in ArthaPilot tax modeling.

Tax Rates is a reference tool for the bracket and rate assumptions that feed into ArthaPilot tax-aware workflows. It shows current federal brackets, state overlays, LTCG rates, and NIIT thresholds by filing status.

Use this page to verify the rate assumptions behind your backtests, AMT calculations, and retirement-tax comparisons.

Open Tax RatesRead Tax Rate Docs

What this reference covers

  • Federal ordinary income brackets by filing status.
  • Long-term capital gains rate tiers and NIIT thresholds.
  • AMT exemption amounts and phase-out ranges.

How this connects to other tools

Tax rates are inputs to the tax-aware backtesting engine, AMT Calculator, and Pre-Tax vs Roth comparison. This reference helps you verify the assumptions behind those workflows.

What to watch for

  • Legislative changes that may alter brackets or sunset provisions.
  • Filing-status differences that materially change effective rates.
  • Whether the state overlay matches the resident state and tax year you want to evaluate.

Tools that use these rates

  • Tax-Aware Backtesting for lot-level after-tax results.
  • AMT Calculator for ISO exercise and AMT credit recovery.
  • Pre-Tax vs Roth for retirement contribution comparisons.

FAQ

Does ArthaPilot model state taxes?

Yes. Pick a resident state in the Tax Rates tool and the chart and calculator overlay the state schedule (latest published year) alongside the federal results. The full-kernel sweep also annotates IRMAA, NIIT, Social Security taxability, and ACA subsidy cliffs.

Related Pages

Tax Rate Docs

Detailed bracket tables and sunset provision context.

Tax-Aware Backtesting

How tax rates feed into lot-level after-tax modeling.

AMT Calculator

ISO exercise thresholds and AMT credit recovery.