What this line means
The sum of all amounts you allocated across the form: direct deposits on lines 1c, 2c, and 3c, plus savings bond purchases on lines 4a and 5a. This total must exactly match the refund amount on Form 1040 line 35a. If it does not match — even by one cent — the IRS rejects Form 8888 and sends your entire refund as a single paper check.
Does this apply to you?
- You filled out any part of Form 8888 and need to verify the total
- You allocated your refund across multiple accounts or savings bonds
- You need to confirm that your Form 8888 amounts equal your Form 1040 line 35a refund
Easy to overlook
This line is a checksum, not a choice Line 6 is not a new amount you decide — it is a math check. Add up every dollar amount you entered on the form. If the total does not match your refund from Form 1040 line 35a, the IRS ignores the entire form. Double-check your addition before filing. 1 IRS Form 8888 instructions — Line 6
Adjustments to your refund after filing break the match If the IRS adjusts your return (correcting a math error, disallowing a credit, or offsetting a debt), your actual refund changes but your Form 8888 allocation stays the same. When this happens, the IRS deposits the adjusted refund into the first account on line 1 and ignores the rest of the allocation. You do not need to amend Form 8888 — the IRS handles this automatically. 2 General filing pattern — allocation total mismatch with Form 1040
Watch out for this
Forgetting to update Form 8888 after changing your return. If you revise your Form 1040 and the refund amount on line 35a changes, the amounts on Form 8888 no longer add up. Tax software usually recalculates this automatically, but manual filers must redo the math on Form 8888 every time the refund changes.
Footnotes
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IRS Form 8888 Instructions, Line 6. https://www.irs.gov/instructions/i8888 ↩
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IRS Form 1040 Instructions, Refund. https://www.irs.gov/instructions/i1040 ↩