Finance

Cash Flow Forecast

A cash flow forecast projects cash in/out and ending cash balance over time to manage liquidity.

Written by MetricKit EditorialReviewed by MetricKit Editorial ReviewUpdated 2026-01-28
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Definition

A cash flow forecast projects cash in/out and ending cash balance over time to manage liquidity.

Formula

Ending cash = beginning cash + inflows - outflows

Example

Starting cash $2M plus $1.2M inflows minus $1.5M outflows ends at $1.7M.

How to use it

  • Use weekly or monthly granularity depending on burn and volatility.
  • Align assumptions to pipeline, collections, and vendor payment terms.

Common mistakes

  • Using revenue instead of cash collections for timing-sensitive plans.
  • Failing to update the forecast after large hiring or capex changes.

Measured as

Ending cash = beginning cash + inflows - outflows

Misused when

  • Using revenue instead of cash collections for timing-sensitive plans.
  • Failing to update the forecast after large hiring or capex changes.

Operator takeaway

  • Use weekly or monthly granularity depending on burn and volatility.
  • Align assumptions to pipeline, collections, and vendor payment terms.
  • Tie Cash Flow Forecast to the same balance-sheet date, scenario, and decision memo you are using elsewhere in the model.
  • Document which claims, costs, or adjustments your team includes before comparing numbers across forecasts, covenants, or valuation work.

Next decision

  • Read Runway and burn: gross vs net burn, working capital, and cash levers if the decision depends on interpretation, policy, or trade-offs beyond the raw formula.
  • Decide whether Cash Flow Forecast belongs in cash planning, valuation, or debt monitoring so the number is used in the right model.

Where to use this on MetricKit

Guides