What Form 1042-S Is For
IRS Form 1042-S (2018) reports U.S.-source income paid to foreign persons such as nonresident aliens, foreign corporations, and partnerships. It serves as the counterpart to Form 1099, which applies to U.S. citizens and residents. The form details payments such as dividends, royalties, scholarships, interest, insurance premiums, and compensation for services, along with the withholding tax collected, typically ranging from 0% to 30%, depending on the applicable tax treaty.
Filed by withholding agents (including financial institutions, universities, and domestic corporations), Form 1042-S reports individuals' compliance with both Chapter 3 and Chapter 4 (FATCA) rules for income subject to withholding. Explore how annual withholding totals reported on Form 1042 must align with every Form 1042-S you file.
When You’d Use Form 1042-S
You must file Form 1042-S whenever you make U.S.-source payments to foreign persons that are subject to withholding under the tax code. This includes payments made to nonresident aliens, foreign corporations, partnerships, or trusts.
- Filing deadline: For the 2018 tax year, the form was due on March 15, 2019, regardless of whether it was filed electronically or on paper.
- Electronic filing: Required for anyone submitting 250 or more forms through the IRS FIRE system.
- Extensions: You can request an automatic 30-day extension by filing Form 8809 before the deadline.
- Amended returns: File an amended Form 1042-S if you identify an error after submission.
Even if no tax was withheld—due to a treaty or exemption—you still must file the form to report the income paid. Visit our IRS Form Help Center for guidance on complex cross-border reporting, including foreign withholding rules.
Key Rules and Details for 2018
The IRS Form 1042-S (2018) included several vital updates and filing requirements. Each rule ensures accurate reporting for foreign individuals, entities, and payments subject to withholding under the Internal Revenue Code.
- Applicable Filers: Includes nonresident alien individuals, foreign partnerships, foreign branches, and foreign trusts receiving U.S.-source income during the calendar year.
- Covered Income Types: Report all royalties paid, timber distributions, and payments for dependent or independent personal services, as well as other withholdable payments under IRC sections 1441–1464.
- Form Identification Requirements: Each submission must include accurate income codes and a unique 10-digit identifier to track every taxpayer and qualified intermediary through the filing process.
- Special Entity Rules: Payments to a territory financial institution, publicly traded corporation, private foundation, or business entity must follow the IRS instructions for exemption and proper reporting.
- Flow-Through and Partnership Reporting: If a payment represents a foreign partner’s share of effectively connected income or is made to a flow-through entity, it must be reported separately.
- Reference Guidance: Filers should refer to each page of the IRS 2018 instructions to confirm the correct treatment of distributions, federal procurement payments, and tax liability.
If incomplete 1042-S filings affect prior years, you can review how to resolve unfiled or late federal returns.
Step-by-Step Filing Process (High Level)
- Confirm applicability: Use Form 1042-S for U.S.-source payments to foreign persons; do not use it for amounts paid to a United States citizen reported elsewhere.
- Identify the payer role: Determine whether you file on behalf of a withholding agent, qualified intermediary, or a trust subject to withholding.
- Collect recipient documentation: Verify residence for treaty benefits, obtain valid W-8 forms, and note whether income includes services, annuities, or other categories defined in the instructions.
- Classify income: Select the correct income codes, ensuring rates are determined under applicable laws and any tax treaty agreement.
- Calculate withholding: Include amounts deposited, credits, and adjustments; recipients may claim credit for tax withheld on their returns.
- Apply reporting rules: Report per account when required, and state whether income arises from dependent personal services or another type.
- Prepare and file: Complete all boxes accurately, including payer and recipient data, gross amounts, and tax withheld; file by the due date and furnish copies to recipients.
- Document exceptions: Note items exempt by statute or treaty; this step typically requires proper documentation and careful handling of treaty claims, as well as effective record-keeping.
Common Mistakes and How to Avoid Them
When filing IRS Form 1042-S (2018), withholding agents often make avoidable errors. Here are common mistakes and how to prevent them:
- Listing “Unknown Recipient”: This condition happens when recipient documentation is missing. Avoid it by collecting valid Forms W-8BEN or W-8BEN-E and verifying all details before making payments.
- Incorrect income figures: Many filers include cents or misplace decimals. Consistently round to whole dollars and confirm totals before submission.
- Wrong income codes or missing amendments: Refer to the official instructions to ensure every income type uses the correct code and files amendments promptly for any corrections.
- Combining multiple payment types: When dealing with various income sources, file a separate Form 1042-S for each to maintain accuracy and avoid processing errors.
Learn available IRS payment plan options when Form 1042-S corrections create withholding liabilities.
What Happens After You File
After submitting IRS Form 1042-S (2018), the IRS reviews the data to confirm it matches records from both the withholding agent and the foreign recipient. The information is used to verify that the correct amount of tax was withheld and reported. If you file electronically, check the FIRE system within a few days to ensure your file has been accepted.
The IRS may share this data with tax treaty partners to confirm proper reporting abroad. Filers must keep copies for at least three years. Generally, accurate and timely filing helps prevent penalties and supports smooth refund processing for recipients.
FAQs
What counts as effectively connected income on Form 1042-S?
Effectively connected income refers to U.S.-source income linked to a trade or business in the United States. It includes wages, business profits, and other taxable payments reported to foreign recipients.
Who qualifies as a foreign person for filing purposes?
A foreign person is anyone who is not a U.S. citizen or resident, including a nonresident alien, foreign corporation, partnership, or trust that receives U.S.-source income.
What types of payments are subject to withholding?
Any U.S.-source income, such as dividends, interest, or royalties paid to a foreign person, may be subject to withholding under IRS rules.
How does a foreign corporation report payments received?
A foreign corporation uses Form 1042-S to report income received from U.S. sources, showing the amount paid and the applicable withholding tax.
Do nonresident alien individuals always have to file Form 1042-S?
A nonresident alien receives a copy of Form 1042-S whenever U.S.-source income is paid to them. They use the form to claim credits or refunds when filing their U.S. tax return.