Cash Flow Calculator — Free Monthly Cash Flow & Runway Tool
Free · Instant · No signup

Cash Flow
Calculator

Enter your monthly income and expenses to see net cash flow, cash runway, and burn rate. Know whether you're cash flow positive — and how long your reserves will last.

Cash In
Monthly inflows
Sales / revenue
$
Recurring subscriptions
$
Investments / loans received
$
Total cash in $0
Cash Out — Fixed
Same every month regardless of sales
Rent / lease
$
Salaries & payroll
$
Loan / debt repayments
$
Software & subscriptions
$
Insurance
$
Total fixed $0
Cash Out — Variable
Fluctuates with business activity
Inventory / materials
$
Contractor / freelance
$
Marketing spend
$
Shipping / fulfilment
$
Total variable $0
Cash Reserves (Optional)
Current cash on hand — for runway calculation
Cash in bank / on hand
$
Cash Flow Summary
Updates automatically
💡
Enter your numbers to see your cash position
Net cash flow
$0
per month
Runway
months
Total cash in
$0
Fixed expenses
$0
Variable expenses
$0
Total cash out
$0
Net cash flow
$0
Burn rate (if negative)
Cash reserves
Cash runway
Your cash position
Cash flow and profit are not the same thing. A business can be profitable on paper but run out of cash if customers pay late or if inventory investment outpaces collections. This calculator shows your actual cash movement.