COMPLIANCE 12 min read

Global Contractor Compliance Calendar 2026 for US Companies

By Omnivoo Team · Last updated May 15, 2026

Reviewed by Omnivoo Compliance Team on May 15, 2026

May 15, 2026

A wall calendar with compliance deadlines highlighted

Key takeaways

Form 1099-NEC is due 31 January 2026, shifted to 2 February 2026 because 31 January is a Saturday
Form 1042-S is due 15 March, shifted to 16 March 2026 because 15 March is a Sunday
DAC7 reports for 2025 activity are due 31 January 2026 to the registered EU member state
EU Platform Work Directive transposition deadline is 2 December 2026
EU AI Act Annex III high-risk obligations apply from 2 August 2026

TL;DR

Here is the year-at-a-glance calendar of contractor compliance deadlines for US companies in 2026. The three highest-stakes federal dates are Form 1099-NEC by 2 February 2026 (shifted from 31 January because it falls on a Saturday), Form 1042-S by 16 March 2026 (shifted from 15 March because it falls on a Sunday), and 1099 electronic filing for most other types by 31 March 2026. The three highest-stakes international dates are DAC7 reporting by 31 January 2026, EU AI Act Annex III high-risk obligations from 2 August 2026, and EU Platform Work Directive transposition by 2 December 2026. Each deadline below links to the IRS or EU primary source.

January 2026

15 January 2026: Q4 2025 estimated tax payment

The fourth instalment of estimated tax for individuals, including self-employed founders, is due. See IRS Publication 505.

31 January 2026 (extended to 2 February 2026): Form 1099-NEC filing

Form 1099-NEC must be furnished to recipients and filed with the IRS by 31 January. Because 31 January 2026 falls on a Saturday, the deadline is 2 February 2026 under the next-business-day rule.

For tax year 2025, the threshold is the prior $600 rule. For tax year 2026 payments (reported on 1099-NEC filed in January 2027), the threshold is $2,000 under OBBBA. Omnivoo Contract Management tracks contractor payments against the threshold automatically.

E-file required if filing 10 or more information returns in aggregate per Treasury Regulation 1.6011-2.

31 January 2026: Form 941 Q4 2025 employment tax return

Form 941 for the fourth quarter of 2025 is due if you have W-2 employees. With timely deposits, the filer has 10 additional calendar days. See IRS Form 941 instructions.

31 January 2026: DAC7 reporting

EU member states require DAC7 reports covering calendar year 2025 by 31 January 2026. Reports cover EU resident sellers facilitated through the platform. Non-EU platforms file with their member state of registration. See Omnivoo’s pricing for how to capture DAC7-ready data on every EU contractor engagement.

Penalty examples by member state: Ireland imposes 19,045 euros initial plus 2,535 euros per day for late reporting. Member states set their own penalty regimes.

31 January 2026: Form W-2 furnishing to employees

Form W-2 is due to employees and to the SSA by 31 January (extended to 2 February in 2026). Applies if you have W-2 employees alongside contractors.

February 2026

17 February 2026: Form 1099-B, 1099-DA, 1099-S, 1099-MISC (boxes 8 and 10) furnishing

For Forms 1099-B (broker proceeds), 1099-DA (digital asset transactions), 1099-S (real estate proceeds), and certain boxes on 1099-MISC, the recipient furnishing deadline is 17 February 2026 because 15 February falls on a Sunday and 16 February is Presidents Day. See IRS Publication 1099.

28 February 2026 (extended to 2 March 2026): Form 1099-MISC paper filing

Form 1099-MISC paper filing is due 28 February. Because 28 February 2026 falls on a Saturday, the deadline is 2 March 2026. Electronic filing is due 31 March 2026.

March 2026

15 March 2026 (extended to 16 March 2026): Form 1042 and 1042-S

Form 1042-S (Foreign Person’s U.S. Source Income Subject to Withholding) and Form 1042 (the annual return of withholding tax on US-source income of foreign persons) are due 15 March of the year following payment. Because 15 March 2026 falls on a Sunday, the deadline is 16 March 2026.

Form 1042-S applies to:

Payments to foreign contractors for US-source services
Royalties, interest, dividends, and other US-source income paid to foreign persons
Withholding tax remitted under Chapter 3 and Chapter 4 of the Internal Revenue Code

Extension via Form 8809 for 30 days. Recipient extension via Form 15397 for 30 days.

15 March 2026: S-corporation and partnership tax returns

Form 1120-S (S-corps) and Form 1065 (partnerships) are due. Many founders are taxed through these entities. See IRS instructions for Form 1065.

31 March 2026: Form 1099 electronic filing for most types

Electronic filing deadline for Form 1099-MISC and most other 1099 types (excluding 1099-NEC which is due 31 January, and 1099-NEC late e-file penalties apply if missed). See IRS Publication 1099.

April 2026

15 April 2026: Individual income tax return and Q1 estimated tax

Form 1040 is due. Q1 2026 estimated tax payment is due. Form 1120 (C-corp) is due for calendar-year corporations.

30 April 2026: Form 941 Q1 2026

Form 941 for the first quarter of 2026 is due if you have W-2 employees.

May 2026

15 May 2026: Non-profit tax returns

Form 990 series returns for calendar-year tax-exempt organisations are due.

June 2026

15 June 2026: Q2 estimated tax payment

Q2 2026 estimated tax instalment for individuals.

15 June 2026: US persons abroad - automatic 2-month extension expiration

US citizens and resident aliens living abroad whose tax home is outside the US have an automatic 2-month filing extension to 15 June. Tax due is still calculated from 15 April with interest.

July 2026

31 July 2026: Form 941 Q2 2026

Form 941 for the second quarter of 2026.

August 2026

2 August 2026: EU AI Act high-risk obligations apply

Most high-risk AI obligations under Regulation (EU) 2024/1689 apply from this date. AI systems used in recruitment, evaluation, task allocation, or performance monitoring (covered by Annex III item 4) must be in conformity with the Act, registered in the EU database, and subject to provider/deployer obligations.

Penalties under Article 99:

Prohibited practices: up to 35 million euros or 7% of global turnover
High-risk system breaches: up to 15 million euros or 3% of global turnover
Misleading information: up to 7.5 million euros or 1% of global turnover

September 2026

15 September 2026: Q3 estimated tax

Q3 2026 estimated tax instalment.

15 September 2026: Extended partnership and S-corp returns

Forms 1065 and 1120-S extended returns are due if a 6-month extension was filed in March.

October 2026

15 October 2026: Extended individual returns

Form 1040 extended return is due if a 6-month extension was filed in April.

31 October 2026 (extended to 2 November 2026): Form 941 Q3 2026

Form 941 for the third quarter. Because 31 October 2026 falls on a Saturday, the deadline is 2 November 2026.

December 2026

2 December 2026: EU Platform Work Directive transposition

Member states must transpose Directive (EU) 2024/2831 into national law by 2 December 2026. Each member state adopts its own legislation introducing the legal presumption of employment for platform workers and the algorithmic management framework.

US companies with platform workers in any EU member state must review their operating model under each transposing state law before this date.

31 December 2026: DAC7 due diligence completion

Due diligence on EU resident sellers for the 2026 reporting period must be complete by 31 December 2026 under DAC7. The actual report is due 31 January 2027.

31 December 2026: Annual contract renewals and year-end audit

Year-end is the practical deadline for reviewing all contractor relationships, refreshing classification analyses (particularly for UK IR35, Germany Scheinselbstständigkeit, and Brazil pejotização), and renewing contracts with updated terms.

Comparison: federal vs international compliance burden

Date	Type	Authority	Penalty range
2 Feb 2026	Form 1099-NEC	IRS	$60 to $660 per form
31 Jan 2026	DAC7	EU member state	Set by state, e.g., Ireland 19,045 euros
16 Mar 2026	Form 1042-S	IRS	$60 to $660 per form, plus withholding tax
31 Mar 2026	1099-MISC e-file	IRS	$60 to $660 per form
2 Aug 2026	AI Act high-risk	EU member state	Up to 35M euros / 7% turnover
2 Dec 2026	Platform Work Directive	EU member states	Set per state

Where Omnivoo Contract Management fits

Omnivoo Contract Management captures the data set required for both US 1099 reporting and international compliance regimes. For each contractor:

W-9 or W-8BEN / W-8BEN-E collected at onboarding
Tax residency captured, with TIN verification where available
Payment records maintained by contractor and by quarter
Contract terms documented with signatures and audit trail
DAC7-required data points captured for EU resident sellers

The product does not file 1099s or DAC7 reports directly. Data is exported in standard formats compatible with tax filing services and DAC7 reporting tools.

Pricing is a flat $49 per finalized contract. Transaction fees pass through at cost. See pricing.

Quick reference checklist for the year

Print this and pin it to the wall.

Talk to our team about year-end contractor readiness. Get in touch.

What are the most important contractor compliance dates for US companies in 2026?

Three federal: 1099-NEC by 2 February 2026 (because 31 January is a Saturday), 1042-S by 16 March 2026 (because 15 March is a Sunday), and 1099 electronic filing for other types by 31 March 2026. Three international: DAC7 by 31 January 2026, EU AI Act high-risk obligations from 2 August 2026, EU Platform Work Directive transposition by 2 December 2026. Plus quarterly federal estimated tax for self-employed founders and 941 employment tax returns if applicable.

What if I miss the 1099-NEC deadline?

Penalties under IRC 6721 and 6722 apply: $60 per form if filed within 30 days of the due date, $130 per form if filed by 1 August, $330 per form if filed after 1 August or not at all, and up to $660 per form for intentional disregard. Penalties apply both for failure to file and failure to furnish. The Taxpayer First Act sets these amounts and they are adjusted for inflation.

Does the DAC7 deadline apply to me?

Yes if you operate a digital platform that facilitates payments to EU resident sellers, including a contractor marketplace, contractor management software, or gig platform. Non-EU platforms must register in a single EU member state and report there. The 31 January 2026 deadline covers calendar year 2025 activity.

What is the EU AI Act high-risk application date?

2 August 2026. From this date, AI systems classified as high-risk under Annex III, including AI used in recruitment, evaluation, task allocation, and performance monitoring of workers, must comply with the full set of provider and deployer obligations under Regulation 2024/1689.

Are state-level deadlines different?

Yes. State income tax reporting follows state-specific deadlines. Most states with state income tax align with federal deadlines for 1099 reporting. State estimated tax deadlines vary. State quarterly employment tax returns have their own schedules. The calendar in this article covers federal and major international deadlines.

What deadlines apply to BOI reporting under the Corporate Transparency Act?

FinCEN's interim final rule of March 2025 removed the BOI reporting requirement for US companies and US persons. Foreign companies registered to do business in a US state remain subject to BOI reporting. Foreign reporting companies registered before 26 March 2025 had to file by 25 April 2025. Foreign reporting companies registered on or after 26 March 2025 have 30 calendar days from notice of effective registration to file.

When does a US business need to e-file its 1099s?

Treasury Regulation 1.6011-2, as amended by Treasury Decision 9972 effective for filings on or after 1 January 2024, requires electronic filing for any filer with 10 or more information returns in aggregate. Small businesses below 10 returns may still file on paper, but electronic is recommended for any volume.

Compliance Calendar

EU AI Act

EU Platform Work Directive