Income planning · tool
Compare revenue-shock cash scenarios using your own monthly inputs. Browser-only arithmetic with exact cents, date-only months, and visible assumptions.
Private session · fixed-point math
Independent timelines
2026-01-01 → 2026-03-31 · 3 month(s) · target buffer 100 hundredths of a month
Canonical events
No one-off events.
Scenario
| Month | Income | Expense | Events | Month end |
|---|---|---|---|---|
| 2026-01-01 | $1500.00 | $1000.00 | +$0.00 / −$0.00 | $1500.00 |
| 2026-02-01 | $1500.00 | $1000.00 | +$0.00 / −$0.00 | $2000.00 |
| 2026-03-01 | $1500.00 | $1000.00 | +$0.00 / −$0.00 | $2500.00 |
Scenario
| Month | Income | Expense | Events | Month end |
|---|---|---|---|---|
| 2026-01-01 | $700.00 | $1000.00 | +$0.00 / −$0.00 | $700.00 |
| 2026-02-01 | $700.00 | $1000.00 | +$0.00 / −$0.00 | $400.00 |
| 2026-03-01 | $700.00 | $1000.00 | +$0.00 / −$0.00 | $100.00 |
Runway is a scenario under unchanged input assumptions, not a solvency, investment, financing, or financial-advice conclusion.
A visible method
Use Event 1 or Scenario A. No names, uploads, contracts, or account records are needed.
Month one begins on day one. Dates are Gregorian date-only values; no timezone, bank, or holiday service is involved.
Receipts precede expenses on the same day. Ties keep the earliest observation, with the opening position called t0.
Read this before using the number
This page only shows the cash arithmetic implied by the values you enter. It does not extend beyond your window or replace your own records and review.
Runway is a scenario under unchanged input assumptions, not a solvency, investment, financing, or financial-advice conclusion.
Context, not a rulebook
Questions
It puts your opening cash, monthly income and expense assumptions, and anonymous same-month events on separate baseline and shock timelines. Each timeline shows month-end balances and the first date below zero, if any.
No. Use short local event and scenario labels only. There is no account, upload, storage, share link, analytics beacon, or network request for your values.
Reserve cents use integer half-up rounding, including an exact half-cent tie. The cash bridge is spread across the selected months with an integer ceiling so no fractional cent is hidden.
No. A positive-through-window status only describes the unchanged assumptions and dates you entered. It does not extend the timeline or make a business recommendation.