Free cash runway tool

Monthly Burn-Rate Calculator

Calculate how much cash the business is using each month, how long current liquidity can support that burn, and how much the burn rate must improve to reach a longer runway.

Simple calculator

Enter the monthly cash picture

Updates live

Available cash

Cash currently available

Minimum cash reserve to preserve

Runway is measured until cash falls to this reserve.

Typical month

Monthly cash inflows

Cash actually collected during a normal month. Monthly cash outflows

Payroll, rent, vendors, debt service and other cash paid.

Runway target

Target runway

months

Expected one-time cash addition

Optional financing, owner contribution or asset sale expected to be available immediately.

Net burnNet monthly burn = monthly cash outflows − monthly cash inflows. Runway = spendable cash above the reserve ÷ net monthly burn when the business is burning cash.

Advanced calculator

Build a month-by-month runway forecast

24-month model

Starting liquidity

Starting cash

Minimum cash reserve

Available undrawn credit / financing

Shown as optional liquidity, not automatically borrowed. Target runway

months

Base monthly cash flow

Monthly cash collections

Monthly operating outflows

Monthly debt service

Monthly owner distributions / other cash use

Cash-flow trend

Monthly inflow growth

% / mo.

Monthly operating-cost growth

% / mo.

Forecast horizon

months

Runway calculation basis

Working-capital & one-time cash items

Receivables expected to convert to cash

Month receivables are collected

month

Payables / one-time obligations

Month obligations are paid

month

Other one-time cash inflow

Month of one-time inflow

month

Other one-time cash outflow

Month of one-time outflow

month

Forecast modelEach month starts with the prior ending cash balance, applies growing cash collections and operating costs, adds fixed debt/other outflows and entered one-time items, then calculates the new ending cash balance. Available credit is shown separately as optional liquidity.

Advanced result

Cash runway forecast

Current net monthly burn$0Month 1 recurring cash flow

Modeled runway——

Runway incl. available credit—Assumes credit is fully available for cash support

Starting liquidity above reserve$0

Month 1 total outflows$0

Month 1 cash collections$0

Month 1 net cash change$0

Lowest cash in forecast$0

Ending cash at horizon$0

Maximum starting burn for target runway$0

Starting burn reduction needed$0

Month recurring cash flow turns positive—

Total forecast cash change$0

Runway signal—

Target runway—

Available credit$0

Inflow trend—

Cost trend—

OfficeQ readout

Monthly cash forecast

Cash balance by month

Recurring + one-time cash items

Month	Beginning cash	Cash inflows	Cash outflows	One-time net items	Net cash change	Ending cash	Runway signal

Burn-rate sensitivity

Runway at different recurring monthly burn levels

Starting liquidity held constant

Net monthly burn	Runway to reserve	Runway incl. available credit	Annualized cash use	Signal

Target-runway ladder

Maximum monthly burn supported by current liquidity

Before monthly growth assumptions

Target runway	Maximum monthly burn	Required improvement vs current	Maximum monthly outflows at current inflow	Signal

Scope

Cash burn is a liquidity measure

This calculator models cash movement rather than accounting profit. Revenue that has been earned but not collected does not fund runway until it becomes cash. Likewise, noncash expenses such as depreciation do not directly consume cash. Forecast results depend on the timing assumptions entered and do not model taxes, loan covenants, restricted cash, borrowing-base availability, lender discretion, seasonality beyond the entered growth rates, or uncertain customer collections unless reflected in the inputs.