Fiscal Year

What is a Fiscal Year?

A fiscal year (often abbreviated FY) is any consecutive 12-month period a business or government designates for accounting, reporting, and tax purposes. It does not have to follow the calendar year from January 1 to December 31.

Organizations choose fiscal years based on operational logic. A university might run July 1 through June 30 to align with academic enrollment cycles. A retailer might end January 31 to capture the full holiday shopping season in one reporting period. The U.S. federal government runs its fiscal year from October 1 through September 30, which is why federal budget negotiations dominate Washington each fall.

For corporate finance teams, the fiscal year is the frame inside which every budget lives, every variance gets explained, and every travel and expense program must ultimately reconcile.

How does a fiscal year differ from a calendar year?

The calendar year is a specific kind of fiscal year: one that starts January 1 and ends December 31. Most individual tax filers use it by default. Around 70% of U.S. public companies also use December 31 as their fiscal year-end, according to an analysis of 717 public companies by Numeric.io [1].

C corporations have the most flexibility to adopt any fiscal year under IRS Rev. Proc. 2006-45. Pass-through entities such as partnerships and S corporations must generally use the calendar year unless they satisfy the "natural business year" test, where at least 25% of annual gross receipts fall in the last two months of the proposed fiscal year for three consecutive years.

For finance teams, the practical difference comes down to reporting rhythm. A December fiscal year-end means close runs alongside Q4 board reporting, holiday travel surges, and the natural slowdown of corporate activity. A June fiscal year-end puts close in the middle of summer travel season.

Why fiscal year timing matters for T&E budgets

Travel and expense budgets are planned, tracked, and reported within the fiscal year's frame. That timeline determines when employees need to submit expenses, when finance runs variance analyses, and when the company locks its T&E numbers for external reporting.

Three dynamics make fiscal year timing particularly important for T&E programs:

• Budget freeze periods: Many companies restrict discretionary spending in the final 30 to 60 days of their fiscal year to prevent last-minute overruns. Business travel and employee expenses often fall under these restrictions.
• Expense submission deadlines: Finance teams need all expenses submitted and approved before the books close. An expense report submitted weeks after fiscal year-end creates a reconciliation issue that may require adjusting entries.
• Budget utilization spikes: Some departments accelerate travel near fiscal year-end to avoid losing budget in the next planning cycle, creating a sudden surge of bookings and expense reports that manual processes struggle to absorb.

Fiscal Year by the Numbers

Global business travel spending is projected to reach $1.57 trillion by end of 2025, according to GBTA's 2025 Business Travel Index [2]. Companies managing material T&E programs need fiscal-year budget structures that match actual travel patterns rather than calendar assumptions.

The year-end pressure compounds the challenge. The Skift and Navan State of Corporate Travel and Expense 2026 survey found that 71% of travelers spend 30 minutes or more submitting a single expense report [3]. When fiscal year-end triggers simultaneous submission deadlines across a company, finance teams face a surge of reports arriving at once, each requiring review, approval, and often follow-up for missing documentation.

How year-end close affects expense management

The financial close at the end of a fiscal year is one of the most operationally intense periods for finance teams. All outstanding transactions must match to the correct fiscal period, approved expenses must clear, and accruals must be set for charges that have been incurred but not yet invoiced.

For T&E programs, this means expense reports submitted after the close date may not land in the current fiscal year's numbers. Companies relying on manual expense processes often find significant gaps during this window: employees submit late, approvers are slow, and documentation arrives incomplete. Navan Expense reduces this risk by capturing spend at the point of purchase and surfacing unsubmitted transactions before close.

Navan Expense captures card transactions and receipt data continuously, so finance teams enter close with accurate visibility rather than a backlog of unresolved charges.

Fiscal year structure and travel budget planning

Companies with non-December fiscal years face a specific operational challenge: their year-end close does not coincide with the post-holiday slowdown that makes December-year-end organizations' lives easier. A healthcare company with a March 31 fiscal year-end reconciles outstanding travel during spring conference season, when employees are actively traveling. The result is a simultaneous surge of new bookings and unresolved prior-period expenses that taxes manual workflows.

Every travel budget starts with the fiscal year's start date. A solid budgeting process allocates T&E allowances by department or cost center at the start of the year and runs quarterly adjustment reviews to track realized spending against plan. Static spreadsheets can't reflect mid-year policy changes, headcount shifts, or unexpected travel events.

Spend visibility across the full fiscal year lets finance teams identify budget overruns 30 to 60 days before year-end rather than discovering variances during close. Teams using expense report automation reduce the manual touchpoints that slow reconciliation when time is shortest.

When should you consider a non-calendar fiscal year?

A non-calendar fiscal year makes sense when peak revenue or operating activity doesn't align with December. Retailers ending January 31 capture the full holiday season and post-holiday clearance in one period. Universities ending June 30 align with academic enrollment and grant cycles. Government contractors often align to September 30 to match the federal government's budget year.

For T&E programs, the implications are real. If the fiscal year ends March 31, the close window coincides with spring sales conferences and client-facing travel, one of the busiest travel periods of the year. Finance teams running financial close under those conditions have less margin for late submissions and missing receipts than teams whose fiscal year ends in January.

The close process is identical regardless of which month marks year-end. The operational intensity varies with what else is happening in the business.

Related terms

• General ledger: The master record of all financial transactions within a fiscal year; every approved expense posts to a ledger account by fiscal period.
• Cost center: An organizational unit tracked separately in accounting; T&E budgets are often allocated and reported at the cost center level within a fiscal year.
• Accounts payable: The process of managing vendor invoices and employee reimbursements, which must be reconciled and cleared before fiscal year-end close.

Sources

[1] Numeric.io, "Numeric Analysis: Public Company Fiscal Year End," https://www.numeric.io/blog/closing-month-of-accounting-year

[2] GBTA, "2025 Business Travel Index Outlook," https://www.gbta.org/research/2025-business-travel-index-outlook-bti/

[3] Skift & Navan, "State of Corporate Travel and Expense 2026," https://navan.com/resources/reports/state-of-corporate-travel-and-expense-2026

Understanding your fiscal year structure is the first step to building a T&E program that closes cleanly, forecasts accurately, and scales with your business. See how Navan Expense helps finance teams manage travel and expense budgets across any fiscal year.