Written by The Pragmatic CFO. 15+ years running restaurant P&Ls.
Last updated July 31, 2026.
Restaurants that grow quickly often run out of cash even as sales climb. The cause is working capital drag: growing sales require more inventory, more staff, and more vendor payments before the incremental cash arrives. A busy concept adding 20% sales can easily need $60K to $150K of extra working capital per unit that no one budgeted for.
Why busy kills more restaurants than slow
Slow restaurants close because they cannot make rent. Busy restaurants close because they cannot fund inventory and payroll for the growth. The failure mode is different, the trigger is the same: cash out ahead of cash in.
The pattern: same-store sales up 18% year over year. Inventory needs increase by roughly the same amount to support higher throughput. Payroll goes up in advance of the revenue because you have to hire before you can serve. Vendor terms do not stretch. In month 4 of the growth ramp, you are 30 days behind on Sysco and short on payroll cash.
The cash conversion cycle in a restaurant
Cash Conversion Cycle (CCC) = Days Inventory + Days Sales Outstanding – Days Payable Outstanding
For most restaurants:
- Days Inventory: 4 to 10 days depending on concept
- Days Sales Outstanding: 1 to 3 days (card settlement lag)
- Days Payable Outstanding: 15 to 28 days (vendor terms, real timing)
Healthy CCC is negative: customers pay before vendors do. QSR runs -5 to -8 days. Full service runs 0 to +5 days. When CCC turns positive, growth ties up cash. See our related post on why profitable restaurants still run out of money.
The growth math no one runs
| Line | Baseline | +20% growth | Delta |
|---|---|---|---|
| Monthly sales | $150K | $180K | $30K |
| Food inventory on hand | $14K | $17K | $3K |
| Payroll (biweekly) | $36K | $44K | $8K |
| Vendor AP balance | $28K | $34K | $6K |
| Sales tax owed but not remitted | $12K | $14K | $2K |
| Card settlement in transit | $9K | $11K | $2K |
| Working capital tied up (net) | $47K | $56K | $9K/month |
The $9K per month of additional working capital burn on 20% growth is the number that catches operators by surprise. Over a 6-month ramp, that compounds to $54K of cash absorbed before the P&L shows it as anything but healthy growth.
The three variables that determine your cash cycle
1. Card settlement schedule
Toast, Square, and Clover default to 1 to 2 business day settlement. Weekend and holiday sales settle in 3 to 5 days. You can pay to accelerate to same-day (typical fee: 1.5% of expedited volume). Rarely worth it. Better to model the natural lag correctly.
2. Vendor payment terms
The stated terms in your contract are the ceiling. The floor is negotiated relationship. Sysco and US Foods will extend to net-45 for high-volume accounts with strong payment history. That extra 15 days of AP is 15 days of free working capital. Ask for it.
3. Inventory turn frequency
Turning inventory faster is the fastest way to reduce working capital drag. Order smaller quantities more often. Move from twice-weekly to three-times-weekly delivery. Give up the volume discount if it saves 3 days of inventory. See our post on restaurant inventory management.
The cash cycle by concept type
| Concept | Days inventory | DPO | CCC |
|---|---|---|---|
| QSR | 3 to 5 | 18 to 25 | -13 to -20 |
| Fast casual | 5 to 7 | 18 to 25 | -10 to -17 |
| Full service casual | 7 to 10 | 15 to 22 | -5 to -12 |
| Fine dining | 7 to 12 | 15 to 20 | -3 to -8 |
| Bar-forward | 10 to 20 (liquor) | 20 to 30 | -8 to -15 |
| Catering-heavy | 5 to 8 | 15 to 20 | +2 to +10 (AR) |
Catering flips the cycle. AR from event billings can run 30 to 45 days, which is why catering-heavy operators need materially more working capital reserve than pure walk-in concepts.
How to release trapped working capital
- Renegotiate vendor terms. Even a 5-day improvement across your top 5 vendors releases $8K to $25K per unit.
- Reduce SKUs. Every 10% SKU reduction typically reduces inventory carrying value by 6 to 12%.
- Move to just-in-time on high-value proteins. Daily deliveries on steak, fish, and premium produce cut 2 to 4 days of inventory.
- Renegotiate delivery frequency. Twice-weekly beats weekly for cash cycle even if per-delivery cost is slightly higher.
- Move to a merchant of record for third-party delivery. Payouts on some models happen daily rather than weekly. That is 3 to 4 days of released cash.
Working capital during unit expansion
Opening a new unit requires 6 to 10 weeks of operating cash on hand before the unit contributes positive cash flow. Budget for:
- Opening inventory: $18K to $45K depending on concept
- First 8 weeks of payroll: $50K to $150K
- Initial vendor payments while establishing terms: $12K to $30K
- Cash cushion for slow ramp: $30K to $80K
Total working capital for a single new unit opening: $110K to $305K. Most operators underestimate this by 30 to 50% because they only budget the buildout, not the operating ramp.
The bank line as insurance against growth
Every operator planning to grow more than 10% year over year should have a working capital line of credit sized at 2 to 4 weeks of operating expenses. Undrawn is fine. Drawn is fine. The point is availability so you do not get squeezed in a ramp month.
Cost of an unused line: typically 0.25 to 0.5% annual on the commitment. Cost of not having one when you need it: the difference between staying open and closing. For 25 to 50 bps a year, this is not a decision.
The specific trap: peak season into slow season
Seasonal operators (patios, ski towns, beach markets) face a variant of the working capital trap that hits at end of peak season. You bought inventory in peak. You ramped labor for peak. When the season turns, you have inventory to burn off, labor to right-size, and vendor bills coming due from peak volume.
Model working capital by month. Peak plus 4 to 6 weeks is when the pinch hits. Have credit lines drawn or reserves earmarked for that specific window.
For the broader operating context, see the 13-week cash flow template.
FAQ
What working capital reserve should I hold?
4 to 6 weeks of operating expenses as a floor. 8 to 12 weeks if you are growing more than 15% per year or have seasonal volatility.
How do I know if working capital is the problem?
Compute your CCC. If it is positive and getting worse over time, working capital is drying up. Compare inventory days month over month. Rising with no sales change = trapped cash.
Do gift cards help or hurt working capital?
Help. Gift card cash is your money to hold until the card is redeemed. Aggressive gift card sales campaigns typically add 2 to 4 weeks of free working capital during holiday season.
Can I extend vendor terms without damaging the relationship?
Yes. Ask early, ask specifically (“net 45 instead of net 30”), and offer something in exchange (larger orders, longer commitment, exclusive category). Vendors have far more flexibility than they lead with.
What is the fastest way to see working capital drag before it becomes a crisis?
Track cash conversion cycle monthly on a dashboard. If CCC grows by 3+ days in a single month or trends positive over three months, working capital is deteriorating.
For the full 2026 benchmarks, see our State of Restaurant Finance report.