Tax data
Current rules, public receipts.
Tax year 2026 data verified against IRS Rev. Proc. 2025-32, IRS Notice 2025-67, SSA 2026, CMS 2026. Latest imported PolicyEngine US version: 1.705.16.
Freshness at a glance
Live metadata from active, anonymous-readable rules. Refreshed hourly.
Last active-rule update
Tax years covered
24
Active rule values
74,037
PolicyEngine US
1.705.16
Provenance mix
- ACTUAL
- 43,036
- PROJECTED
- 12,046
- EXTRAPOLATED
- 8,700
- MANUAL
- 10,255
Recent rule changes
Public admin run records are restricted, so this log groups active rule values by their UTC creation date.
2 active rule values added or refreshed
707 active rule values added or refreshed
1,335 active rule values added or refreshed
937 active rule values added or refreshed
3,688 active rule values added or refreshed
247 active rule values added or refreshed
Primary-source citations by rule family
Each row shows the first populated citation on the newest active 2026 rule in that family. Links appear only when the live citation text includes an HTTP address.
| Rule family | Live source citation | Provenance |
|---|---|---|
| Tax bracketsstate.income_tax.bracket.rate | PolicyEngine-US 2.49.8; ACTUAL; West Virginia Senate Bill 392 (2026), §11-21-4j(a) | MANUAL |
| Deductionsfederal.deductions.qbi.phase_out.start | Rev. Proc. 2025-32 §4.26, All Other Returns, Threshold amount | MANUAL |
| Contribution limitscontribution_limits.k401a17_compensation | IRC §401(a)(17); IRS Notice 2025-67 / IR-2025-111 — annual compensation limitation under §§401(a)(17), 404(l), 408(k)(3)(C) and 408(k)(6)(D)(ii) increased from $350,000 to $360,000 for 2026 | MANUAL |
| Social Securityssa.social_security.max_benefit_at_67 | SSA OACT, Workers with Maximum-Taxable Earnings, retirement Jan 2026 at age 67 (https://www.ssa.gov/oact/cola/examplemax.html) | MANUAL |
| Medicare / IRMAAhealthcare.irmaa.tier.part_b_monthly | CMS 2026 IRMAA — tier 5 Part B surcharge $487.00/mo | MANUAL |
| ACAhealthcare.aca.fpl_400 | ACA §36B(c)(2)(B) 4× multiplier × HHS 2025 (PRIOR-year) FPG CONTIGUOUS_US first_person ($15,650). 2026 coverage uses the 2025 guidelines (IRC §36B / 26 CFR 1.36B-1(h)). | ACTUAL |