2026 tax-filing document checklist

Organize income, deduction, credit, payment, and identity records before preparation begins.

8 minute guide · Published and last reviewed September 3, 2026 · ProTax Editorial Team

Use this step-by-step checklist

1
Collect W-2s, 1099s, retirement, Social Security, investment, and Marketplace forms.
2
Add records for dependents, childcare, education, mortgage, property tax, charitable giving, HSA, and retirement contributions.
3
Include self-employment income, payment-app statements, mileage, expenses, and estimated-tax payments.
4
Upload readable files to the secure portal and keep originals in your own records.

When professional review mattersTax rules depend on facts, entity type, jurisdiction, dates, and current guidance. Use this resource to organize the conversation—not to decide a tax position by itself.

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2026 tax-filing document checklist

Organize income, deduction, credit, payment, and identity records before preparation begins.

8 minute guide · Published and last reviewed September 3, 2026 · ProTax Editorial Team

Use this step-by-step checklist

1
Collect W-2s, 1099s, retirement, Social Security, investment, and Marketplace forms.
2
Add records for dependents, childcare, education, mortgage, property tax, charitable giving, HSA, and retirement contributions.
3
Include self-employment income, payment-app statements, mileage, expenses, and estimated-tax payments.
4
Upload readable files to the secure portal and keep originals in your own records.