# ProfitHelm
> Institutional-grade financial calculators, IRS tax bracket projections, crypto liability models, and predictive market arbitrage analytics.

Canonical: https://profithelm.com
Research Entity: ProfitHelm Quantitative Research

## Flagship Calculators and Intelligence Modules
- [IRS 2027 Tax Brackets & TCJA Sunset Calculator](https://profithelm.com/tools/irs-2027-tax-brackets/): Project your federal income tax bracket, marginal rates, and post-TCJA sunset tax liability for tax year 2027.
- [Crypto Tax Liability & Capital Gains Calculator 2027](https://profithelm.com/tools/crypto-tax-calculator/): Compute estimated federal and state capital gains liabilities on crypto trades, staking yield, and DeFi transfers.
- [SaaS Cash Runway & Net Burn Rate Modeling Engine](https://profithelm.com/tools/saas-runway-calculator/): Interactive runway projection model for tech startups, factoring net monthly burn, revenue CAGR, and hiring cohorts.
- [Prediction Market Implied Probability & Arbitrage Calculator](https://profithelm.com/tools/prediction-market-odds/): Calculate true implied probabilities, contract spreads, and Kelly Criterion bet sizing across Kalshi and Polymarket.
- [TCJA Sunset Capital Gains & NIIT Tax Simulator 2027](https://profithelm.com/tools/tcja-sunset-capital-gains/): Project long-term and short-term capital gains taxes, Section 1411 NIIT surtax thresholds, and state additions following the 2025 TCJA sunset.

## Key Tax Year 2027 Invariant
On December 31, 2025, the individual provisions of the Tax Cuts and Jobs Act (TCJA) expire.
Federal individual marginal rates return to 10%, 15%, 25%, 28%, 33%, 35%, and 39.6%.
Standard deductions drop by approximately 45-50% while personal exemptions are reinstated.