Check Form 8889, Health Savings Accounts (HSAs)
Look for HSA contributions reported on Form 8889, Part I
Look for HSA distributions reported on Form 8889, Part II
Check Form 1040, Schedule 1 for HSA deduction adjustments
Check Form 1040, line 12 for the HSA deduction if applicable
Check Form 1040, line 8 for taxable HSA distributions if applicable
Review Form W-2, Box 12 with code W for employer HSA contributions
Check Form 5498-SA for total HSA contributions
Check Form 1099-SA for HSA distributions
Review your tax software summary for HSA entries
Check prior-year tax return copies for HSA carryovers or excess contributions