Fiscal Year Calculator
Find the start and end dates of a fiscal or tax year for any country or custom period, and see which calendar year it spans.
Example: March 15, 2025 falls in fiscal year 2024/25, Q4, under the UK convention (April 6 start) — with 22 days remaining in the fiscal year. Under the US federal convention (October 1 start), the same date falls in fiscal year 2025, Q2, since the US fiscal year begins 6 months earlier.
Supports UK (April 6), Australia (July 1), and US federal (October 1) fiscal year start conventions, plus any custom start month.
How fiscal year figures are calculated
Once you set a fiscal year start month, every other figure follows from it: the fiscal year label (named for the calendar year it ends in — a UK fiscal year starting April 2026 is "FY2027," not "FY2026," since it ends in March 2027), the fiscal quarter and month (counted from the fiscal start rather than January), the fiscal week (counted the same way a calendar week counts from January 1st), and the number of days remaining in the current fiscal year.
This matters whenever you're comparing internal reporting periods (which follow the fiscal calendar) against external or personal dates (which usually follow the regular calendar). For the exact difference between any two dates regardless of fiscal boundaries, see the Date Difference Calculator, and for counting working days within a fiscal period, see the Business Days Calculator.
Frequently asked questions
- How is the fiscal year labelled?
- By the calendar year the fiscal year ENDS in — e.g. under the UK convention (starting 1 April), the year that runs April 2026 to March 2027 is FY2027, not FY2026, since it ends in 2027.
- What fiscal year presets are available?
- January (matches the calendar year), April (UK), July (Australia), and October (US federal) — or set any custom start month.
- What does "fiscal week" mean?
- The week number counting from the fiscal year start date, in the same way a calendar week number counts from January 1st.
- What is a fiscal year?
- A fiscal year is a 12-month period a company or government uses for financial reporting and budgeting — it doesn't have to align with the calendar year (January to December), and many organizations deliberately choose a different start month.
- Why do companies use a non-calendar fiscal year?
- Common reasons include aligning the fiscal year with a natural business cycle (retailers often end their fiscal year after the holiday season rather than mid-season), matching a parent company's or industry's convention, or simply following historical or regulatory precedent in their country.
- What is the most common fiscal year end date?
- December 31 (matching the calendar year) is the most common globally, but significant variations exist: the UK government fiscal year ends March 31, the US federal fiscal year ends September 30, and Australia's ends June 30 — each reflected as a preset in this calculator.
- How does the fiscal year affect financial reporting?
- Annual reports, tax filings, and budget cycles are all typically organized around an entity's fiscal year rather than the calendar year — a company with a March fiscal year end reports its "FY2027" results covering April 2026 through March 2027, which can be confusing when comparing figures against calendar-year data from other sources.
- What is the difference between fiscal year and tax year?
- For many entities the two are identical, but they can differ — a company may use one fiscal year for its own financial reporting while being required to file taxes on a different, government-mandated tax year in a particular jurisdiction. Always check local tax rules rather than assuming they match.