Check your IRS online account for tax return transcripts and account transcripts
Request a tax return transcript from the IRS using Form 4506-T
Request a copy of a filed return from the IRS using Form 4506
Contact your tax preparer or CPA for copies of prior returns
Log in to your tax software account if you filed electronically
Search your email and cloud storage for saved PDF copies
Check your personal files, tax folders, and scanned documents
Contact your state tax agency for copies of state returns
Request transcripts from the Social Security Administration if needed for income verification
Use bank records, W-2s, 1099s, and prior-year documents to reconstruct missing returns