What this line means
Your modified adjusted gross income for the Premium Tax Credit. Start with your AGI from Form 1040, line 11a, then add back any tax-exempt foreign earned income (Form 2555), tax-exempt interest (Form 1040, line 2a), and the non-taxable portion of Social Security benefits. This is your share of household income before adding dependents’ income on line 2b.
Does this apply to you?
- You are filing Form 8962 and need to calculate your household income
- You have tax-exempt interest income from municipal bonds
- You received Social Security benefits that were partially or fully non-taxable
- You excluded foreign earned income using Form 2555
Easy to overlook
Non-taxable Social Security benefits increase your modified AGI If you receive Social Security and only a portion is taxable on Form 1040, you still add back the non-taxable portion here. A filer receiving $20,000 in Social Security with only $8,000 taxable on Form 1040 must add the other $12,000 to their modified AGI for PTC purposes. This can push household income above an expected threshold and reduce the credit. 1 IRS Form 8962 Instructions — Line 2a
Tax-exempt interest from municipal bonds counts here Municipal bond interest is not included in your AGI on Form 1040, but it is added back for modified AGI on Form 8962. Filers with substantial muni bond holdings sometimes underestimate their household income for PTC purposes because they forget this add-back. The amount comes directly from Form 1040, line 2a. 2 IRS Publication 974 — Premium Tax Credit
Watch out for this
Using your AGI directly from Form 1040, line 11a without the add-backs. Modified AGI for the Premium Tax Credit is not the same as regular AGI. If you have any tax-exempt interest, non-taxable Social Security, or excluded foreign income, your modified AGI is higher than your Form 1040 AGI. Entering the wrong number understates your household income and overstates your credit — leading to a repayment when the IRS catches the discrepancy.
Footnotes
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IRS Form 8962 Instructions, Line 2a. https://www.irs.gov/instructions/i8962 ↩
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IRS Publication 974, Premium Tax Credit, Modified Adjusted Gross Income. https://www.irs.gov/pub/irs-pdf/p974.pdf ↩