IRS 2027 Tax Brackets & TCJA Sunset Calculator
Project your federal income tax bracket, marginal rates, and post-TCJA sunset tax liability for tax year 2027.
ProfitHelm delivers deterministic tax projections, startup runway simulations, and cross-venue prediction market arbitrage engines. Clean, mathematical precision backed by statutory references.
Project your federal income tax bracket, marginal rates, and post-TCJA sunset tax liability for tax year 2027.
Compute estimated federal and state capital gains liabilities on crypto trades, staking yield, and DeFi transfers.
Interactive runway projection model for tech startups, factoring net monthly burn, revenue CAGR, and hiring cohorts.
Calculate true implied probabilities, contract spreads, and Kelly Criterion bet sizing across Kalshi and Polymarket.
Project long-term and short-term capital gains taxes, Section 1411 NIIT surtax thresholds, and state additions following the 2025 TCJA sunset.
Key statutory expiration dates and policy milestones tracked by ProfitHelm Quantitative Research to frontrun tax regime changes and market volatility.
| Statutory Milestone | Effective Date | Governing Code / Rule | Projected Market Impact |
|---|---|---|---|
| TCJA Individual Provisions Sunset | Dec 31, 2025 | P.L. 115-97 (TCJA § 11001) | Reversion to 10/15/25/28/33/35/39.6% rates; 50% cut in standard deduction. |
| Corporate AMT and Section 174 Amortization | Active FY2026 | 26 U.S. Code § 174 | Mandatory 5-year domestic amortization for software engineering payroll. |
| IRS Form 1099-DA Digital Asset Reporting | Jan 1, 2026 | Treasury Reg. 1.6045-1 | Brokers mandatory reporting of gross crypto proceeds and cost basis. |
| CFTC Event Contract Framework Review | Q2 2026 | 17 CFR Part 40 | Expansion of regulated financial event derivatives on Kalshi and Cantor. |
Every formula and tax bracket published by ProfitHelm is audited daily against official statutory texts from the Internal Revenue Service (IRS), the Securities and Exchange Commission (SEC), and the Commodity Futures Trading Commission (CFTC). We provide deterministic, un-slanted figures so founders, traders, and high-net-worth operators can make confident capital decisions.