Live demos
Run the real APIs
Each demo calls the live endpoint from your browser and renders the enveloped, statute-cited result — the same response your code gets.
Interactive
No key required in beta.
State estate tax cliff
In Massachusetts and Oregon the whole estate is taxed once you cross the exemption — not just the excess. New York erases its exemption at 105%.
Open demo →Flight delay compensation
EU261, UK261, US DOT, and the Montreal Convention in one call — including the extraordinary-circumstances analysis that decides whether the airline owes you.
Open demo →Inherited IRA RMD schedule
The SECURE Act 10-year rule with the annual-RMD-within-the-window trap — build the full year-by-year distribution schedule.
Open demo →Every other API
More interactive demos are rolling out. Until then, each API page has a copy-paste example.
Federal Estate Tax & Portability
Post-OBBBA $15M exemption, DSUE, and the NY cliff.
Try via API →Gift Tax Annual Exclusion Optimizer
Crummey 5&5 hanging powers, surfaced before they accumulate.
Try via API →GRAT / CLAT / SLAT Trust Calculator
Zero-out annuities from the IRS §7520 rate, to the penny.
Try via API →QTIP / QDOT Marital Trust Optimizer
The optimal election fraction across both deaths.
Try via API →Social Security Filing Strategy
The claiming-age combination that maximizes lifetime value.
Try via API →Social Security PIA Estimator
Primary Insurance Amount from earnings history.
Try via API →ISO Exercise AMT Calculator
The AMT bill on an ISO exercise, plus the MTC carryforward.
Try via API →QSBS §1202 Exclusion
Gain exclusion by acquisition era, with state conformity.
Try via API →PTET / SALT Cap Optimizer
Is the pass-through-entity tax election worth it?
Try via API →§199A QBI Deduction
The 20% deduction with SSTB and wage limits.
Try via API →Foreign Tax Credit Limitation
Form 1116 §904 limitation by basket.
Try via API →R&D Tax Credit (§41)
ASC and regular method with the payroll-tax offset.
Try via API →Form 8606 / Backdoor Roth
Pro-rata basis math that catches the contamination trap.
Try via API →Pension Lump Sum vs Annuity
Mortality-weighted NPV with the PBGC guarantee.
Try via API →SSDI Benefit Estimator
Disability benefits with the workers-comp offset.
Try via API →CPP + OAS (Canada)
Canadian retirement benefits, in CAD.
Try via API →Australian Superannuation
Contribution caps and Division 293, in AUD.
Try via API →ADA Compliance Requirements
2010 Standards scoping for a building.
Try via API →Child Support Calculation
State guideline models, only where we can cite them.
Try via API →Multi-State Employment Law
Minimum wage, overtime, leave — with effective dates.
Try via API →FAFSA Student Aid Index
The 2026-27 SAI, rebuilt from the current formula.
Try via API →Immigration Points & Eligibility
Express Entry CRS, Australia, and UK skilled worker.
Try via API →Professional Credential Verification
License lookup with honest coverage and freshness.
Try via API →FDA Enforcement & Warning Letters
Search, history, and deterministic violation classification.
Try via API →SaaS Terms of Service Compliance
Is this vendor's ToS compatible with your use case?
Try via API →Supplier Diversity Certification
Verify and monitor diversity certifications.
Try via API →Platform Content Policy Compliance
Deterministic policy checks across platforms.
Try via API →Patent Expiration & Maintenance
Term, PTA/PTE, and the maintenance-fee windows.
Try via API →Generic Drug Entry Date
Hatch-Waxman exclusivity and the generic-entry date.
Try via API →