IRS Form 1116 (2018): Foreign Tax Credit Filing Guide

Form 1116 (2018) is the IRS tax form individuals, estates, and trusts use to claim the foreign tax credit for certain foreign taxes paid or accrued. It separates income into distinct categories to ensure the credit is calculated correctly and to help prevent double taxation.

Late Filers

Taxpayers filing a late 2018 return can still file Form 1116 to claim the foreign tax credit and complete the correct year’s compliance record.

Passive Category Income

Investors who report foreign taxes on dividends, interest, or mutual fund statements often use the passive category income box when preparing Form 1116.

General Category Income

Employees, self-employed taxpayers, and others with active foreign-source earnings usually test whether those amounts belong in the general category income basket.

Foreign Branch Income

Taxpayers with foreign branch income, a category added for post-2017 years, must use the separate 2018 box and compute that basket independently.

Section 951A Income

Certain taxpayers with section 951A inclusions have a distinct 2018 category, and no foreign tax carryover is allowed for that income.

Form 2555 Users

Taxpayers using Form 2555 must reduce related foreign taxes because the credit cannot be claimed on foreign earned income excluded from U.S. tax.

Follow the steps below to complete Form 1116 (2018) accurately. Several categories and sourcing rules changed for post-2017 years, and these matters appear on the 2018 form.

1. Gather your documents before starting

Collect your 2018 return, Forms 1099-DIV and 1099-INT, K-1s, foreign wage records, broker statements, foreign tax receipts, exchange-rate support, and any prior-year Form 1116 worksheets before starting the calculation carefully.

2. Choose the correct income category

Check only one box for each income category and prepare one form per basket. On page 1, the updated and revised 2018 form lists section 951A income, foreign branch income, passive category income, general category income, section 901(j) income, certain income re-sourced by treaty, and lump-sum distributions, where applicable by law.

3. Report foreign income and taxes on the correct lines

Use Part I to enter gross foreign-source income on line 1a, related expenses on line 2, allocated deductions on lines 3a through 4b, and taxable income or loss on line 7. Then use Part II to report taxes withheld on dividends, rents, royalties, and interest, as well as other foreign taxes paid or accrued.

4. Calculate net foreign source taxable income

In Part III, start with foreign taxes from line 9, adjust for any carryback or carryover on line 10, and compute net foreign source taxable income on lines 15 through 17. That figure drives the limitation that keeps the credit from offsetting U.S. tax on U.S.-source income.

5. Choose paid or accrued and apply carryover rules 

Choose whether the credit is claimed for taxes paid or accrued, convert amounts under the instructions, and reduce taxes tied to excluded foreign earned income. Excess credit generally may be carried back 1 year and forward 10 years, but foreign taxes on section 951A income do not receive carryback or carryover treatment.

6. Claim the 2018 foreign tax credit

Complete lines 21 and 22 to determine the allowable credit, then carry the final amount on line 33 to Schedule 3 (Form 1040), line 48, or the corresponding return listed on the form.

Missing Form 1116 or Tax Records for 2018?

Late filers often lack 2018 brokerage statements, wage records, or prior returns needed to calculate the foreign tax credit. IRS transcripts and payer records can help reconstruct income, withholding, and carryover information before you file.

IRS Wage and Income Transcript

Request an IRS Wage and Income Transcript to recover key Forms W-2, 1099, 1098, 5498, and IRA entries reported to the federal government for 2018.

IRS Account Transcript

An IRS Account Transcript helps confirm return posting, payments, penalty activity, and whether the IRS has already processed a late 2018 filing or adjustment on record.

Broker or Payee Statements

Broker statements and Forms 1099-DIV or 1099-INT can show passive category income and foreign taxes reported on a qualified payee statement needed for Form 1116.

Contact Prior Employers or Foreign Payors

Contact prior employers, brokers, partnerships, or foreign payers for corrected statements when transcripts do not show the exchange-rate support or foreign tax detail needed to calculate the credit.

Do not estimate foreign income or foreign taxes; use IRS transcripts and payer records so your 2018 numbers match reported information and avoid follow-up notices.

These are frequent Form 1116 errors that trigger IRS delays, adjustments, denied credits, or missed tax benefits.

• Using the wrong tax year form — The 2018 form, instructions, and line references must match, or the foreign tax credit calculation and attachments may fail with IRS processing.
• Missing the correct income basket — 2018 added section 951A income and foreign branch income, so checking the wrong category can distort the limitation, sourcing, and carryover rules.
• Claiming excluded Form 2555 income — You cannot claim a credit for foreign taxes tied to foreign earned income or housing amounts excluded from U.S. tax under Form 2555.
• Failing to reduce qualified dividends or capital gains — Foreign-source qualified dividends and capital gains taxed at reduced U.S. rates may need adjustments before you include them on line 1a.
• Using withheld tax that is not fully creditable — Treaty limits matter, and only the foreign tax you were legally required to pay to the foreign country qualifies for the credit.
• Ignoring interest expense apportionment — Interest expense usually must be apportioned between U.S. and foreign source income, even when the borrowing occurred in the United States.
• Assuming a refund is still available — A late 2018 filing may still claim the credit for compliance purposes, but the normal refund window likely closed years ago.
• Missing or incorrect taxpayer identification numbers — The identifying number must match the tax return exactly so the Form 1116 credit posts to the correct IRS account.
• Missing attachments or redetermination updates — Carryover computations, amended returns, or foreign tax redeterminations often require supporting schedules, explanations, or a revised Form 1116 from the taxpayer.

What is IRS Form 1116 (2018) used for?

Form 1116 (2018) is the IRS form individuals, estates, and trusts use to claim the foreign tax credit for certain foreign taxes paid or accrued to a foreign country or U.S. possession. It helps limit double taxation by matching the credit to foreign-source income in the correct separate category.

Can I still file a 2018 tax return with Form 1116?

Yes, you can still file a late 2018 tax return with Form 1116. Filing now may still resolve IRS compliance issues, document the proper foreign tax credit, and reduce ongoing failure-to-file exposure, even if the normal refund window has likely expired for most taxpayers.

Do I need to file Form 1116 to claim the foreign tax credit?

Not always. If all of your foreign source gross income was passive category income, all foreign taxes were reported on a qualified payee statement, and the total creditable tax was no more than $300, or $600 on a joint return, you may claim the credit without filing Form 1116.

How is the Form 1116 foreign tax credit calculated?

The credit is calculated by separating income into the proper basket, determining foreign source taxable income, listing foreign taxes paid or accrued, and applying the limitation in Part III. In general, the allowable credit cannot exceed the U.S. tax attributable to that category of foreign-source income.

Can I use Form 1116 if I also filed Form 2555?

Yes, but you cannot claim the foreign tax credit for taxes on income excluded under Form 2555 or Form 2555-EZ. If only part of your foreign-earned income was excluded, you must reduce the foreign taxes on Form 1116 to remove the portion allocable to excluded income.

What is a foreign tax credit carryover on Form 1116?

A carryover is an unused foreign tax credit that exceeded the limitation for a separate category. For 2018, excess foreign taxes generally could be carried back 1 year and forward 10 years, but not for section 951A income, which does not get carryback or carryover treatment.

Do I need Schedule B with IRS Form 1116 (2018)?

Not for the original 2018 filing package. Schedule B (Form 1116) is a later carryover reconciliation schedule used in current IRS materials, but it was not part of the 2018 Form 1116 package itself. For a true 2018 filing, follow the 2018 form and instructions for carryover computations.

Where does the credit go on my tax return?

On the 2018 form, the final foreign tax credit appears on line 33. If you are filing Form 1040, that amount flows to Schedule 3 (Form 1040), line 48, while other listed returns use the corresponding line named on page 2 of Form 1116.