Kitfiler Tax

File your 2026 federal tax return online

Prepare Form 1040 step by step, see your refund as you go, and e-file directly with the IRS through Kitfiler.

What you can file

  • W-2 wages, including qualified tips and overtime
  • Interest, dividends, retirement and Social Security (1099-INT, DIV, R, SSA-1099)
  • Self-employment and single-member LLCs (Schedule C and SE, QBI deduction)
  • Standard or itemized deductions, Child Tax Credit, Earned Income Credit

Not supported yet

  • Capital gains and losses (Schedule D, Form 8949)
  • Rental, partnership and S corporation income (Schedule E, K-1s), farms
  • Education credits, premium tax credit, AMT
  • State returns

The program tells you if your return needs something it can't compute.

Your information is protected

  • Two-step sign-in with an authenticator app, every time
  • SSNs and bank account numbers encrypted in storage
  • Encrypted connection; nothing cached in your browser
  • Used only to prepare and file your return. Privacy policy