IRS Resources
A curated index of the official IRS publications, forms, and tools that pair with TaxEase calculators. All links go straight to IRS.gov or SSA.gov.
Filing & forms
- IRS.gov — main site— All forms, instructions, and publications.
- Form 1040 (Individual)— The primary U.S. individual return.
- Schedule SE (Self-Employment)— Computes 15.3% SE tax.
- Form W-4 (Withholding)— Adjust paycheck withholding.
Brackets, retirement & FICA
- Pub 17 — Your Federal Income Tax— Authoritative annual overview.
- Pub 590-A / 590-B — IRAs— Traditional/Roth contributions and RMDs.
- 401(k) and IRA contribution limits— Annual cost-of-living adjusted limits.
- Social Security wage base— Annual cap on Social Security FICA.
Capital gains & investments
- Topic 409 — Capital Gains and Losses— 0%/15%/20% LTCG explanation.
- Form 8949 / Schedule D— Reporting capital gains and losses.
- Net Investment Income Tax (Form 8960)— 3.8% NIIT for high earners.
Estimated taxes & payments
- Pub 505 — Tax Withholding and Estimated Tax— Quarterly estimated-tax safe harbor rules.
- Form 1040-ES— Estimated tax payment vouchers.
- EFTPS — Electronic Federal Tax Payments— Free federal payment portal.
Tools & taxpayer help
- IRS Tax Withholding Estimator— Official W-4 calculator.
- Where's My Refund?— Refund status tracker.
- Taxpayer Advocate Service— Independent IRS help for unresolved issues.
Pair these with our 2026 federal tax brackets, tax glossary, and methodology page.