Gross burn is your total monthly outflow. Net burn is outflow minus inflow — the number that actually shortens your life expectancy. Take your cash at the start of a period, subtract cash at the end, divide by the months in between. An interactive calculator lands on this page soon; the live version already runs inside CashFish.

Why it matters

Burn calculated quarterly is a postmortem. By the time a spreadsheet tells you spending crept up, it has been creeping for months — usually through subscriptions nobody remembers approving and duplicates nobody caught.

What you get

• Average monthly burn computed from complete months of approved data

• Cash health score and runway that move as burn moves

• Anomaly alerts when spending breaks pattern

• Subscription detection that surfaces recurring charges you forgot

• Budgets with variance alerts before overspend becomes burn

• Interactive in-page calculator shipping soon

How it works

1. Connect your inboxes, drives and financial tools in about 2 minutes each, all OAuth, with 150 days of history imported.

2. AI extracts every outflow and inflow, flags anomalies and detects the subscriptions padding your burn.

3. You approve the data, and burn, runway and forecasts update from it continuously.

See your burn while you can still change it. Start your 4-day free trial — cancel anytime, full refund guarantee.