Fiscal Quarter Calculator
Pick a date and your organization's fiscal year start month to see which fiscal quarter it falls in, and that quarter's start and end dates.
How this is calculated
This tool shifts the calendar so your chosen month becomes the start of "year one," then applies the same three-month quarter boundaries the Quarter Calculator uses to a plain calendar year. Picking January as the start month collapses back to an ordinary calendar quarter; picking any other month walks the same math forward, so an October start puts fiscal Q1 in October–December and fiscal Q4 in July–September of the following calendar year. Days into and left in the quarter reuse the site's daysBetween primitive, the same one every other date-math tool on this site is built on.
Fiscal years don't all start the same month
The US federal government's fiscal year runs October through September, so its fiscal Q1 is what most people think of as calendar Q4. Plenty of large companies run their own offset fiscal years too — Microsoft's starts in July, for instance — and some retailers push their year-end into late January or February so the November–December holiday rush and its returns land inside a single fiscal quarter instead of getting split across two. If a deadline or report just says "Q3" with no other context, don't assume it means calendar Q3 — check which fiscal year it's actually counted against first.
Frequently asked questions
What is a fiscal quarter?
A fiscal quarter is a three-month block of an organization's fiscal year, and a fiscal year doesn't have to start in January. If a fiscal year begins in October, for example, its fiscal Q1 is October–December, not January–March.
Which fiscal year start month should I pick?
Use whichever month your organization's fiscal year actually starts — check its budget documents, 10-K filing, or investor relations page if you're not sure. October is a common preset for US federal agencies and their contractors; July and April are common starts elsewhere. If your organization simply follows the calendar year, pick January, which gives the same result as the Quarter Calculator.
Does this handle a 4-4-5 retail calendar?
No — this calculator uses plain calendar months shifted to your chosen start month. A 4-4-5 calendar divides each quarter into weeks instead of calendar months, so its exact boundary dates can land a few days off from what's shown here.