IRS Tax Forms & Schedules (2026)
Plain-English guides to the forms you actually need — each paired with the calculator that fills it in. Not sure which apply to you? Start with the Form Wizard.
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Schedule C
Profit or Loss From Business
Report your self-employed income and business deductions — then calculate the tax on your net profit.
Schedule SE
Self-Employment Tax
Calculate the 15.3% Social Security and Medicare tax on your self-employment profit.
Form 8995
Qualified Business Income Deduction
Claim the 20% deduction on your pass-through and self-employment income.
Form 8949 + Schedule D
Capital Gains and Losses
Report every investment sale and calculate the tax on your net capital gains.
Form 8889
Health Savings Accounts (HSAs)
Report your HSA contributions and distributions — and claim the deduction.
Form W-4
Employee's Withholding Certificate
Tell your employer how much tax to withhold — and stop over- or under-paying.
Schedule 8812
Credits for Qualifying Children and Other Dependents
Claim the Child Tax Credit and the Credit for Other Dependents.
This section covers the forms that pair with a TaxSaveIQ calculator — not the entire IRS library. For every official form and its instructions, see IRS.gov.