12-Month Store Cash Flow Projection
A store can be profitable on average yet hit a low-cash month that forces a loan or closure. Model seasonal swings and growth on your steady revenue, see the cash balance every month, and find the exact funding gap for year one.
This calculator provides estimates for educational use only. It is not tax, legal, or financial advice. Figures are based on current IRS rules — verify against IRS.gov or consult a licensed professional. See our full disclaimer.
Step 1 — Opening & Revenue
Step 2 — Cost Structure
Step 3 — Shape
Year-One Verdict
12-Month Projection
| Mo | Revenue | Net | Cash |
|---|---|---|---|
| 1 | $51,750 | $14,085 | $54,085 |
| 2 | $51,863 | $14,155 | $68,240 |
| 3 | $50,329 | $13,204 | $81,444 |
| 4 | $47,754 | $11,608 | $93,052 |
| 5 | $45,056 | $9,935 | $102,987 |
| 6 | $43,230 | $8,802 | $111,789 |
| 7 | $43,076 | $8,707 | $120,496 |
| 8 | $44,976 | $9,885 | $130,381 |
| 9 | $48,770 | $12,238 | $142,619 |
| 10 | $53,779 | $15,343 | $157,962 |
| 11 | $58,969 | $18,561 | $176,522 |
| 12 | $63,220 | $21,197 | $197,719 |
* Pure arithmetic from your inputs — no tax rates or time-sensitive figures are hard-coded. Seasonality is a smooth model, not a forecast. Educational information, not financial advice.
The Annual Shape That Sinks Stores
Seasonality
A smooth swing around steady revenue. Tourism, college, and holiday retail live or die by it.
Growth
Month-over-month growth compounds the base — realistic for a store building awareness.
Low-cash month
The annual minimum balance. Below zero = funding gap you must close.
Extra funding needed
The top-up to keep the year cash-positive through the dip.
Project Your First Year
- Enter starting cash. Your opening reserve after one-time costs.
- Set steady monthly revenue. Your mature monthly sales.
- Set fixed cost & variable %. From your Viability build.
- Set growth & seasonality. Be honest about both.
- Read the 12-month table. Find the low-cash month.
- Close any gap. Note the extra funding needed.
Model the Year, Then Fund the Gap
Opening reserve → use the Viability tool
Size the starting cash that feeds this projection.
Open Startup Viability12-Month Cash Flow FAQs
The ramp tool shows the opening curve; this tool shows the whole first year including seasonality. Many stores are profitable on average but hit a low-cash month mid-year that forces a loan or closure. Seeing the annual shape prevents that surprise.
You set a swing amplitude (e.g. 15%). Revenue peaks around summer and dips around winter by that amount, applied as a smooth sine curve. Set it to 0 for a flat year, or raise it for strongly seasonal trade areas (tourism, college towns, holiday retail).
The month your projected balance dips to its minimum. If that minimum is below zero, the store needs extra funding (or a stronger month) to survive. We report the exact top-up.
Yes — starting cash is your opening reserve, and each month’s net (revenue × (1 − variable%) − fixed) is added. It is the annual companion to the Startup Viability runway.
That general tool is for any business. This one is tuned for stores: it layers seasonality and growth on a steady retail/food revenue base and pairs with the rest of the Store Viability suite.
Authoritative References
- U.S. Small Business Administration — Manage Your Finances — cash-flow forecasting discipline.
Estimates only. All figures come from your inputs; no tax rates or time-sensitive constants are hard-coded. Seasonality is a smooth model, not a forecast — adjust to your trade area. Educational information, not financial advice.