2027 announcement calendar.
Typical release windows, actual publication status and effective periods.
Release windows are typical, not deadlines. Fiscal-year 2027 GSA and SNAP rates begin in 2026. An official source determines when a figure changes status.
| Number | Usual release | Status | Announced | Effective |
|---|---|---|---|---|
| Form 1099-K reporting threshold | Legislation | Official | Date not recorded | 2027-01-01 to 2027-12-31 |
| 401(k) contribution limits | November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| 403(b) contribution limits | November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| 457(b) contribution limits | November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| Adoption credit limit | October–November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| Alternative minimum tax exemptions | October–November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| Long-term capital gains brackets | October–November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| Child and dependent care credit | Legislation | Official | Date not recorded | 2027-01-01 to 2027-12-31 |
| Child tax credit | October–November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| Defined contribution total limit | November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| Dependent care FSA limit | Legislation | Official | 2025-07-04 | 2027-01-01 to 2027-12-31 |
| Earned income tax credit | October–November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| Estate and gift tax exemption | October–November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| Federal poverty guidelines | January | Awaiting publication | Date not recorded | Awaiting source |
| Foreign earned income exclusion | October–November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| Health FSA contribution limit | October–November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| Annual gift tax exclusion | October–November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| HDHP deductible and out-of-pocket limits | May | Official | Date not recorded | 2027-01-01 to 2027-12-31 |
| Highly compensated employee threshold | November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| HSA contribution limits | May | Official | Date not recorded | 2027-01-01 to 2027-12-31 |
| IRA contribution limits | November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| Kiddie tax unearned-income threshold | October–November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| Standard mileage rates | December | Awaiting publication | Date not recorded | Awaiting source |
| IRS high-low per diem rates | September | Official | Date not recorded | 2026-10-01 to 2027-09-30 |
| GSA per diem rates | August–September | Official | Date not recorded | 2026-10-01 to 2027-09-30 |
| Premium tax credit percentages | July–August | Official | Date not recorded | 2027-01-01 to 2027-12-31 |
| Qualified business income thresholds | October–November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| Roth IRA income phase-outs | November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| SEP contribution limits | November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| SIMPLE contribution limits | November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| SNAP maximum benefits | August–October | Official | 2026-08-21 | 2026-10-01 to 2027-09-30 |
| Social Security earnings test | October | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| Social Security wage base | October | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| Standard deduction | October–November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |
| Federal income tax brackets | October–November | Projected | Date not recorded | 2027-01-01 to 2027-12-31 |