What is flux analysis in the month-end close?
Flux analysis is a month-end close review that compares each account balance with the prior period or the same period last year, and explains the movements that exceed set thresholds. It catches errors such as missing accruals, misposted entries or duplicated invoices before the books are closed, and documents why the numbers changed for reviewers and auditors.
Also calledfluctuation analysisflux reviewbalance sheet and P&L flux
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- Compares
- Balances period on period
- Triggered by
- Amount and percentage thresholds
- Purpose
- Catch errors before close
How flux analysis works
After the trial balance is substantially complete, each account's balance is compared with the previous month, the same month last year or the budget. Thresholds, usually a combination of an amount and a percentage, decide which movements need explaining. The preparer investigates each one by looking at the transactions behind it, writes a short explanation, and corrects any errors found; a reviewer signs off. Public companies use flux analysis as a review control over financial reporting, so the thresholds and evidence are often tested by auditors. It differs from variance analysis, which compares actuals with budget or forecast to explain performance rather than to check accuracy. Software now pulls the transactions behind each movement and drafts the explanation for the accountant to check. Numeric and FloQast automate flux analysis in the close, and Stacks runs it with AI agents.
Common questions
What is the difference between flux analysis and variance analysis?+
Flux analysis compares actual balances between periods to check the books are right. Variance analysis compares actuals with budget or forecast to explain business performance.
How are flux thresholds set?+
Usually as a combination of an absolute amount and a percentage change, scaled to materiality, so small accounts with large percentage swings do not all need commentary.
Can flux analysis be automated?+
Largely. Software can compare balances, apply thresholds, pull the transactions behind each movement and draft explanations, leaving the accountant to verify and approve them.
Flux analysis software
Part of Accountio’s accounting technology coverage · Glossary
