Compliance Calendar

Never Meet A Deadline. Arrive Early.

The key tax and filing dates across the US, UK and UAE, in one place — with what's coming up next, highlighted. (Our clients never see this page; we watch their dates for them.)

Jan 15
Q4 Estimated Tax
Form 1040-ES — final quarterly payment for the prior year
Jan 31
W-2 · 1099-NEC · Form 940
Issued to recipients and filed
Mar 16
Partnership & S-Corp Returns
Form 1065 & 1120-S (15th, shifted for the weekend)
Apr 15
Individual & C-Corp Returns
Form 1040 & 1120 · Q1 estimates · FBAR (auto-extended to Oct)
Jun 15
Q2 Estimated Tax
Plus the automatic filing extension date for Americans abroad
Sep 15
Q3 Estimates · Extended 1065/1120-S
Quarterly payment and extended pass-through returns
Oct 15
Extended 1040 / 1120 · FBAR
Final extended deadline for individual and corporate returns
Quarterly
Form 941 Payroll Tax
Apr 30 · Jul 31 · Oct 31 · Jan 31 — plus deposit schedules
Jan 31
Self Assessment
Online return + balancing payment + first payment on account
Apr 5
Tax Year Ends
The UK personal tax year closes
May 31
P60 To Employees
Year-end pay certificates issued
Jul 6
P11D — Benefits In Kind
Expenses and benefits reported to HMRC
Jul 31
Second Payment On Account
The second Self Assessment instalment
Oct 5
Register For Self Assessment
Deadline to register if newly self-employed
Oct 31
Paper Self Assessment
Deadline for paper (vs online) returns
Rolling
VAT · RTI · Accounts
VAT one month + 7 days after each quarter · RTI on/before payday · accounts 9 months after year end · CT600 at 12
+28 days
VAT Return
Within 28 days of each tax period's end (monthly or quarterly per the FTA)
+9 months
Corporate Tax Return & Payment
Nine months after your financial year end
Monthly
WPS Payroll
Wages through the Wage Protection System, every cycle
Dec 31, 2026
Small Business Relief Sunset
Relief applies only to periods ending on or before this date — plan for 2027 now
Ongoing
CT Registration · License Renewal
Entity-specific registration windows and annual trade-license renewals

Dates shift for weekends and public holidays, and several obligations are entity-specific. This calendar is general guidance, not advice — confirm your exact dates under a signed engagement.

Let Us Watch Your Dates.

Every obligation, every jurisdiction, eighteen months ahead — so you never see this page again.

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