US tax season checklist 2027: federal and state tax preparation guide with all documents and deductions

The 2027 US tax season is approaching, and organizing your documents, deadlines, and deductions early can save you time and money. This US tax season checklist 2027 covers everything you need for your federal and state tax returns, whether you're an employee, freelancer, or remote worker. It includes key forms like W-2 and 1099, deductions for medical expenses, charitable donations, and remote work, along with critical deadlines to avoid penalties.

Why this checklist is essential for your tax return

In 2027, the IRS and state tax agencies maintain strict requirements for validating deductions and credits. This federal and state tax preparation guide helps you gather everything systematically, from income to deductible expenses, and identify opportunities like the home office deduction or charitable contribution write-offs. Use Foco to track each step as a task, set deadlines, and attach scanned documents or notes with reminders.

Remember: the federal tax filing deadline is April 15, 2027 (or the next business day if it falls on a weekend or holiday). Some states have different deadlines, such as California (April 18) or Massachusetts (April 19). If you need an extension, file Form 4868 by April 15 to extend your deadline to October 15, 2027.

• Gather all W-2 forms from employers for 2026
• Collect all 1099 forms (1099-NEC, 1099-K, 1099-INT, 1099-DIV) for freelance, investment, or interest income
• Check if you received Forms 1095-A, B, or C for health coverage (Affordable Care Act)
• Obtain receipts and records for deductible expenses: remote work (home office, internet, equipment), unreimbursed medical expenses, and health insurance premiums
• Gather proof of charitable donations (cash or goods) to IRS-qualified organizations
• Review student loan statements for interest paid (Form 1098-E)
• Collect education expense documents (Form 1098-T) if claiming credits like the American Opportunity Tax Credit
• Verify records of state and local taxes paid in 2026 (deductible on federal return)
• Gather moving expense records for work-related moves (deduction applies only to active-duty military members)
• Obtain records of disaster losses (if claiming deductions for uninsured damages)
• Review bank and credit card statements to identify undocumented deductible expenses (e.g., business miles)
• Confirm eligibility for the Earned Income Tax Credit (EITC) and gather income and dependent documents
• Verify if you received unemployment payments in 2026 (taxable in most cases)
• Gather retirement account information (IRA, 401(k)) for deductible contributions or distributions
• Review Form 1099-R for pension or annuity distributions
• Obtain cryptocurrency records (transactions, gains, or losses) if you traded in 2026
• Verify eligibility for the Child Tax Credit and gather dependent documents (Social Security numbers, birth dates)
• Review prior-year returns to identify recurring credits or deductions (e.g., solar energy credit)
• Create a digital or physical folder to store all documents and scans organized by category
• Schedule an appointment with a tax professional or tax software (e.g., TurboTax, H&R Block) before April 1, 2027
• File your federal return by April 15, 2027, or request an extension with Form 4868
• File your state return by your state's specific deadline (check exact date)