Your 2027 tax year,
in one place
Filing deadlines for 31 jurisdictions worldwide. Choose a country to see every tax deadline explained in plain English — with links to forms and AI-powered guidance.
United States
IRS tax deadlines including individual 1040, corporate 1120, quarterly estimated tax, payroll, and state taxes.
United Kingdom
HMRC deadlines covering Self Assessment, VAT (MTD), PAYE, Corporation Tax, CIS, and National Insurance.
Australia
ATO deadlines for individual returns, BAS, PAYG instalments, super guarantee, FBT, and company tax.
Ireland
Revenue deadlines for Form 11 Pay & File, VAT, PAYE/PRSI/USC, corporation tax, CGT, CAT, and RCT.
Singapore
IRAS deadlines for individual income tax by 18 April, the corporate return by 30 November, ECI, GST F5, withholding tax, CPF and property tax.
European Union
Tax calendars for all 27 EU member states. Each country page covers VAT returns, corporate income tax, personal income tax, and social security contributions.
All 27 EU member states covered. Ireland is listed separately above.
Compare VAT deadlines across the EU
Filing frequency, the day of the month each VAT return falls due, and the annual corporate and personal deadlines — every EU member state in one table.
Open the EU comparison tableWhat each tax calendar includes
Key filing deadlines
Monthly and annual tax filing dates with plain-English explanations for every obligation.
Tax forms & categories
Every form referenced with category labels so you can quickly find what you need.
Holiday impact
Public holidays that affect reporting deadlines are flagged right in the calendar.
Risks of Missing Tax Deadlines
- Late filing penalties — automatic fines ranging from fixed amounts to daily accruals that escalate the longer you delay
- Interest on unpaid tax — daily or monthly interest charges that compound until the balance is cleared
- Audit triggers — repeated late filings or payments can increase the likelihood of a tax authority audit
- Loss of reliefs or allowances — missing certain deadlines may forfeit eligibility for deductions, credits, or carry-forward losses
- Reputational damage for businesses — chronic non-compliance can affect credit ratings, licensing, and tender eligibility
Who Needs a Tax Calendar
- Small business owners juggling VAT, payroll, and corporate tax across multiple jurisdictions
- Freelancers and self-employed individuals managing quarterly estimated tax payments and annual returns
- Accountants and tax professionals who need a single source of truth for their clients' filing obligations
- Expats and international workers navigating tax residency rules and cross-border filing deadlines
- Finance teams in multinational companies coordinating tax compliance across subsidiaries in different countries
Common Tax Calendar Mistakes
- Relying on memory instead of a structured calendar — leads to missed deadlines even for experienced filers
- Ignoring public holidays that shift filing and payment due dates to the next working day
- Using the same deadlines for every jurisdiction when each country has unique due dates and extension rules
- Forgetting about estimated tax payments — quarterly or monthly instalments are easy to overlook until penalties hit
- Not checking for deadline changes — tax authorities frequently adjust dates due to legislation or operational changes
Frequently Asked Questions
Which countries are covered in the Global Tax Calendar?
How are public holidays handled?
Are VAT deadlines included for EU countries?
Can I subscribe to these deadlines in my own calendar?
Can I get AI-powered help with tax forms?
How often is the calendar updated?
Missing a jurisdiction?
We are constantly adding new countries and tax calendars. Contact us to request a specific jurisdiction or tax type.
Tax calendars are provided as reference guides. Deadlines may change due to legislative changes or tax authority announcements. Always verify with the relevant tax authority or a qualified tax professional.
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