Key takeaways
- W-2 and 1099-NEC due Monday 1 Feb 2027; 1065 and 1120-S Monday 15 Mar; 1040 and 1120 Thursday 15 Apr.
- Extensions run to 15 Sep (1065, 1120-S) and 15 Oct (1040, 1120, FBAR).
- 1099-NEC/MISC threshold is $2,000 for payments made in 2026; 1099-K back to $20,000 and 200 transactions.
2027 filing calendar (tax year 2026, calendar-year filers)
| Date | What is due |
|---|---|
| Friday 15 January 2027 | Fourth-quarter 2026 estimated tax payment |
| Monday 1 February 2027 | Forms W-2 and 1099-NEC to recipients and the IRS/SSA; 1099-MISC to recipients; Q4 Forms 941 and annual 940 (31 January falls on a Sunday) |
| Monday 15 March 2027 | Form 1065 (partnerships) and Form 1120-S (S corporations), with K-1s; Form 7004 to extend |
| Wednesday 31 March 2027 | Electronically filed 1099-MISC and most other information returns (other than 1099-NEC) to the IRS |
| Thursday 15 April 2027 | Form 1040 and Form 1120 (calendar-year C corporations), with Form 5472 where required; Form 4868 or 7004 to extend; first-quarter 2027 estimated tax; FBAR (FinCEN 114), with an automatic extension to 15 October |
| Wednesday 15 September 2027 | Extended Forms 1065 and 1120-S |
| Friday 15 October 2027 | Extended Forms 1040 and 1120; extended FBAR |
Fiscal-year filers and state returns have their own dates. Check state calendars separately.
What is new for the 2027 season
- 1099-NEC and 1099-MISC threshold: $2,000. Under the One Big Beautiful Bill Act, the reporting threshold rose from $600 to $2,000 for payments made in 2026, and will be adjusted for inflation from 2027. Vendor lists built on the old $600 rule will over-report.
- 1099-K: back to $20,000 and 200 transactions. Payment platforms report only above both limits, so fewer clients will receive one, but income is still taxable without a form.
How firms spread the load
| When | Work to get ahead of |
|---|---|
| November to December | Bookkeeping catch-up for business clients, W-9 collection, engagement letters and Section 7216 consents for any offshore work |
| January | 1099 vendor listings against the $2,000 threshold, payroll year-end, organizers out |
| February to mid-March | Partnership and S-corporation returns and K-1s |
| Mid-March to April | Individual and C-corporation returns; extensions for anything incomplete |
| May to October | Extended returns, amended returns, planning |
Firms that use an offshore team usually hand over the data-entry-heavy work (bookkeeping clean-up, 1099 listings, trial balance to return, first drafts) and keep review and signature in-house. See outsourced accounting and tax prep for CPA firms and the 7216 and PTIN checklist.
Sources
- IRS: Publication 509, Tax Calendars
- CPA Practice Advisor: One Big Beautiful Bill Act changes 1099 thresholds
- Avalara: OBBBA 1099 reporting threshold
Frequently asked questions
When are 1065 and 1120-S returns due in 2027?
Monday 15 March 2027 for calendar-year partnerships and S corporations, with K-1s. Form 7004 extends the filing date to 15 September 2027.
When is the 2027 tax filing deadline for individuals?
Thursday 15 April 2027 for 2026 Form 1040 returns. Form 4868 extends filing, but not payment, to 15 October 2027.
When are W-2s and 1099-NEC forms due in 2027?
Monday 1 February 2027, because 31 January 2027 falls on a Sunday. Both go to recipients and to the IRS or SSA by that date.
What is the 1099-NEC threshold for 2026 payments?
$2,000. The One Big Beautiful Bill Act raised the reporting threshold for Forms 1099-NEC and 1099-MISC from $600 to $2,000 for payments made in 2026, with inflation adjustments from 2027.
Please note: this guide is general information based on the rules as they stood on the review date above. Regulations and RBI/CBDT procedures change often — please get advice on your specific facts before acting.