What this line means
The dollar amount you want deposited into a third bank account. Lines 3a and 3b capture the routing number and account number for this third account, and line 3c specifies the amount. Three accounts is the maximum for direct deposit splits on Form 8888. If you need your refund in more than three accounts, you will need to transfer funds manually after receiving the deposits.
Does this apply to you?
- You want your refund split across three different bank accounts
- You maintain separate accounts for different financial goals (checking, savings, emergency fund) and want each funded directly
- You are using the first two accounts for deposits and the third for a different purpose like a joint account
Easy to overlook
Three accounts is the hard limit Form 8888 supports exactly three direct deposit accounts plus savings bond purchases. There is no workaround or additional form to add a fourth account. If you need funds in more accounts, deposit into three and transfer the rest manually through your bank after the refund arrives. 1 IRS Form 8888 instructions — Lines 3a through 3c
You do not have to use all three account slots If you only need two accounts, leave lines 3a through 3c blank. Filers sometimes feel pressured to fill in every line on the form. Blank lines are fine — the IRS deposits into the accounts you specify and ignores the rest. 2 General filing pattern — three-account refund splitting
Watch out for this
Leaving line 3c blank when you have entered a routing and account number on lines 3a and 3b. If the IRS has bank details but no dollar amount, it cannot process the deposit. Either fill in all three lines (3a, 3b, and 3c) or leave all three blank. Partial entries cause the entire Form 8888 to be rejected.
Footnotes
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IRS Form 8888 Instructions, Lines 3a-3c. https://www.irs.gov/instructions/i8888 ↩
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IRS Form 8888 Instructions, General Instructions. https://www.irs.gov/instructions/i8888 ↩