Form 1042 Checklist: 2017 Tax Year
Form 1042, Annual Withholding Tax Return for U.S. Source Income of Foreign Persons, reports and reconciles federal income tax withheld on U.S. source income paid to foreign persons. The
2017 form introduced enhanced matching requirements for information returns and clarified backup withholding procedures, which directly affected filer verification obligations and penalty exposure for incomplete withholding documentation.
Who Must File Form 1042
Every withholding agent or intermediary that receives, controls, or pays a withholdable payment to foreign persons during calendar year 2017 must file Form 1042 unless an exception applies.
This includes financial institutions, corporations, partnerships, and other entities that control or pay amounts subject to withholding under Chapters 3 and 4 of the Internal Revenue Code.
You must file if you withheld income tax under IRC Section 1441, which covers payments such as dividends, interest, and royalties made to nonresident alien individuals or foreign entities.
Filing obligations also apply if you withheld under IRC Section 1446, which governs effectively connected income distributed to foreign partners of partnerships.
Filing requirements extend to payments made to foreign corporations, foreign trusts, foreign estates, and nonresident alien individuals. The March 15 deadline applies to all Form 1042 returns for the preceding calendar year.
Reconciling Information Returns for 2017
Beginning in 2017, withholding agents are required to assign a unique 10-digit identification number to each Form 1042-S filed. This identifier cannot be the recipient’s U.S. or foreign taxpayer identification number and must be numeric.
Obtain and reconcile all income statements issued to foreign recipients for income paid during the 2017 calendar year. Filers must cross-reference each foreign recipient’s Tax Identification
Number (TIN) against reported data to prevent reporting mismatches that trigger Internal
Revenue Service correspondence.
Filing Amended Income Statements
When you discover errors on previously filed information returns, you must file amended forms as soon as possible. Withholding agents filing an amended form must complete the following
steps
1. The “Amended” checkbox at the top of the form, located directly below the title, must be checked to indicate that the filing corrects a previously submitted return.
2. An amendment number must be entered to the right of the checkbox, with “1” used for the first amendment and higher numbers assigned sequentially for each additional amendment.
3. The amended filing must retain the same unique form identifier that was used on the original form to ensure proper IRS matching and tracking.
4. Corrected copies of the amended form must be provided to all affected recipients promptly after the amended return is filed with the Internal Revenue Service.
Reporting Withholding and Tax Liability
Calculate and report cumulative withholding liability using the designated lines on Form 1042.
The 2017 form includes Line 65a and 65b for deposits made during and after the calendar year,
Line 66 for overpayment credits from the prior year’s Form 1042, and Line 67 for credits for withholding by other agents.
Form 1042 does not require separate reporting of withholding by IRC section, such as distinguishing between Section 1441 and Section 1442 amounts. Complete Section 2 of Form
1042 to reconcile U.S. source FDAP income reported under Chapter 4.
Lines in Section 2 break down income categories under Chapter 4 requirements for 2017 reporting. Section 1 of the form, Record of Federal Tax Liability, requires you to report tax liability for each quarter-monthly period rather than deposit amounts.
Backup Withholding Reporting
Report backup withholding amounts withheld under IRC Section 3406 on Form 945 in most cases. When backup withholding applies to payments made to foreign persons under presumption rules, you may report those amounts on the appropriate information return.
If you report backup withholding on income statements, file a separate form for amounts withheld at different rates. Withholding agents must file a separate form for each rate applied to the same income type paid to the same recipient.
Documentation and Certification Requirements
The 2017 instructions expanded guidance on Form W-8BEN-E (Certificate of Status of
Beneficial Owner for U.S. Tax Withholding and Reporting) eligibility. Financial institutions were required to use this certificate rather than the prior Form W-8BEN when certifying status for certain payments made to foreign entities.
Form W-8BEN remains the appropriate certification form for nonresident alien individuals claiming foreign status or treaty benefits. Withholding agents must also obtain Form W-8IMY from qualified intermediaries, withholding foreign partnerships, and withholding foreign trusts, while Form W-8ECI documents claims that income is effectively connected with the conduct of a
U.S. trade or business.
Attach copies of all amended income statements issued in 2017 when filing your return. Identify recipients by country code using the IRS foreign country code list current for 2017, which now matches the standardized list used on Forms 926, 1118, 3520, and 8805.
Penalties and Compliance
Penalty language in the 2017 instructions added specificity about accuracy-related penalties under IRC Section 6662 when withholding documentation is incomplete or backup withholding rates are applied incorrectly. The penalty for not filing Form 1042 when due equals 5 percent of the unpaid tax for each month or part of a month the return is late, up to a maximum of 25 percent.
Late payment penalties apply separately at one-half of 1 percent per month. Interest accrues on unpaid taxes and penalties from the due date until payment.
Additional 2017 Reporting Considerations
The 2017 instructions restated passive foreign investment company (PFIC) reporting obligations but did not change the line structure. Filers withholding on PFIC distributions were directed to separate these amounts in workpapers for IRS review.
Maintain complete records of all withholding activities, information returns issued, and supporting documentation for at least three years after the reporting due date. All withholding agents must complete Section 2 regardless of whether they withheld amounts under Chapter 4.
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