Restaurant Rent: Learn the 10% Test Before You Sign

Ryan’s starting planning target is rent around 10% of sales. Use it to ask a clear question: what sales does this space require? It is a benchmark, not a law or proof that a location is affordable.

First learn the percentage

With $5,000 monthly rent and $50,000 monthly net sales, calculate 5,000 ÷ 50,000 × 100 = 10%. Of every $100 sold, $10 goes to base rent. Use the same month for both numbers, excluding sales tax and pass-through tips from sales.

If sales fall to $40,000, rent becomes 12.5%. The rent did not change; fewer sales are carrying it. If you forecast $80,000 simply to make the ratio attractive, you have hidden a demand assumption rather than solved a rent problem.

Base rent is not the whole occupancy cost

Ask what the lease adds: CAM or common-area charges, property-tax and insurance pass-throughs, maintenance obligations and other recurring charges. Suppose these add $1,000. Total monthly occupancy becomes $6,000, or 12% of $50,000 sales.

Listings often quote rent per square foot per year, so confirm the period before you enter it. At $30 per square foot per year for 2,000 square feet, annual base rent is 30 × 2,000 = $60,000, or $5,000 a month (60,000 ÷ 12). A triple-net (NNN) lease adds some or all of the property taxes, insurance and maintenance on top of rent, so ask for those figures too and convert them the same way: $6 per square foot per year × 2,000 ÷ 12 = $1,000 a month.

Keep utilities, repairs and insurance definitions consistent with the rest of your budget. A cost counted in occupancy should not appear again elsewhere. Deposits and construction use cash but should not be mixed indiscriminately into a normal-month rent ratio.

Work backward from the target

First decide which number the 10% applies to. Applied to base rent alone, $5,000 ÷ 0.10 = $50,000 of monthly sales. Applied to total occupancy of $6,000, which is what you will actually pay, the test is stricter: convert 10% to 0.10, then divide: $6,000 ÷ 0.10 = $60,000. The rent calculator uses the total-occupancy version. At a $20 average order over 26 open days, $60,000 is about 116 orders per open day (60,000 ÷ 26 ÷ 20 = 115.4, rounded up). Now investigate whether the location and kitchen can support that volume.

Do not add those 116 orders to the break-even tool’s orders. These are two tests of the same sales plan, not separate streams of customers. Food, labor, debt and owner pay may require still more sales.

Then test the downside. If you forecast $66,000 and the space needs $60,000, sales can fall (66,000 − 60,000) ÷ 66,000 = 9.1% before total occupancy passes 10%. A slow month, a slower opening or a hopeful forecast can use that up; a forecast that sits exactly on the required sales has no cushion at all.

Compare two spaces with the same test

Suppose you are choosing between two fictional spaces and forecast the same $60,000 of monthly net sales at either address. Run every number for both spaces, in the same order, before you let the lower rent win.

• Space A: $4,500 base rent plus $900 of recurring charges is $5,400 total occupancy. Base rent is 4,500 ÷ 60,000 × 100 = 7.5% of sales; total occupancy is 5,400 ÷ 60,000 × 100 = 9%.
• Space B: $6,000 base rent plus $600 of recurring charges is $6,600 total occupancy. Base rent is 6,000 ÷ 60,000 × 100 = 10% of sales; total occupancy is 6,600 ÷ 60,000 × 100 = 11%.

On base rent alone, Space B lands exactly on the 10% benchmark. On total occupancy, the number you will actually pay, it is 11%. Space A’s higher charges also narrow the gap between the offers from $1,500 to $1,200 a month, which is why base rent alone is a poor way to compare them.

Now work backward at a 10% total-occupancy test. Space A needs $5,400 ÷ 0.10 = $54,000 a month; Space B needs $6,600 ÷ 0.10 = $66,000. At a $20 average order over 26 open days that is about 104 orders per open day for A (54,000 ÷ 26 ÷ 20 = 103.8, rounded up) and 127 for B (66,000 ÷ 26 ÷ 20 = 126.9, rounded up). A $60,000 forecast clears the test at Space A and falls $6,000 short at Space B.

Rent test versus break-even sales

Passing the rent test does not mean the restaurant makes money. Break-even sales are the month’s fixed operating costs divided by the contribution margin, the share of each sales dollar left after food, packaging and other variable costs. Suppose either space carries $18,000 of other fixed operating costs each month, such as scheduled management and salaried kitchen pay, insurance and software subscriptions, and variable costs run at 60% of sales, leaving a 40% contribution margin. Put scheduled fixed labor in fixed costs and truly variable labor, the hours that rise and fall with sales, in the variable percentage; each cost belongs in one place only. This is a simplified operating break-even: it comes before debt principal, taxes, capital purchases and owner draws, which need sales above these figures.

• Space A: fixed costs are $18,000 + $5,400 = $23,400. Break-even sales are 23,400 ÷ 0.40 = $58,500, about 113 orders per open day (58,500 ÷ 26 ÷ 20 = 112.5, rounded up).
• Space B: fixed costs are $18,000 + $6,600 = $24,600. Break-even sales are 24,600 ÷ 0.40 = $61,500, about 119 orders per open day (61,500 ÷ 26 ÷ 20 = 118.3, rounded up).

Space A passes the 10% test at $54,000 but does not break even until $58,500, so the rent test alone would understate what that space needs. Space B breaks even at $61,500 but does not meet the 10% test until $66,000, so there the rent test is the stricter one. Whichever figure is higher is the sales number to investigate. The $1,200 monthly occupancy difference is worth $1,200 ÷ 0.40 = $3,000 of extra sales, or about six extra orders per open day (3,000 ÷ 26 ÷ 20 = 5.8, rounded up). Compare that with each location’s foot traffic and seating rather than with the rent quotes.

The 10% figure is a hypothetical planning test, not a universal rule. It gives two offers one common question and makes the sales assumption visible; a different concept, market or lease structure can justify a different benchmark. Space B at 11% can still be the right choice if its location credibly produces the extra orders, and Space A at 9% still loses money if sales arrive at $55,000. Run the rent calculator for each space, then the break-even calculator with that space’s occupancy included in fixed costs, and use the location comparison to add fit-out, deposits, free-rent months, annual increases and delay costs before you decide.

Percentage rent is a lease clause, not the rent percentage

The 10% test measures rent as a percentage of sales. Percentage rent is a lease clause, commonly used in retail, that adds a share of your sales above a breakpoint on top of base rent. Suppose the $5,000 base rent comes with 6% of annual sales above $1,000,000. At $50,000 in an average month, or $600,000 a year, no percentage rent is due. At $100,000 in an average month, or $1,200,000 a year, the year’s percentage rent is 6% × (1,200,000 − 1,000,000) = $12,000, an average of $1,000 a month, so average total occupancy becomes $5,000 + $1,000 + $1,000 = $7,000, or 7% of sales. That is the year’s cost spread evenly, not the amount payable in any particular month; when it is paid depends on the lease’s reporting and annual reconciliation.

Check two things before you sign. The natural breakpoint is annual base rent ÷ the percentage: $60,000 ÷ 0.06 = $1,000,000 a year, the sales at which 6% of sales equals the base rent. A lower breakpoint starts percentage rent sooner: at $600,000 a year, or $50,000 in an average month, the same space needs $75,000 in an average month, not $60,000, to meet a 10% total-occupancy test ((6,000 − 0.06 × 50,000) ÷ (0.10 − 0.06) = 75,000). Keep the breakpoint and the sales in the same period: $5,000 ÷ 0.06 = $83,333 is the monthly breakpoint, correct as a monthly figure but twelve times too small if treated as the annual one.

These figures treat every month as the average month of the lease year and assume the lease charges on the same sales you use for the 10% test. Leases define gross sales in their own terms, so restate your sales on the lease’s definition first. Strongly seasonal sales, and breakpoints settled month by month with no annual true-up, need the lease’s own schedule rather than this average. If the rate is above your target, higher sales eventually push occupancy back over it, so only a range of sales meets the test. The rent calculator takes an optional rate and annual breakpoint, includes percentage rent in total occupancy on the same annualized basis and shows that range.

Compare the lease over time

A free-rent period may exclude additional charges. Annual increases and reimbursement timing can matter more than the advertised first-month rent. With 3% annual base-rent increases, $5,000 becomes $5,150 in year 2 and $5,304.50 in year 3.

The location comparison separates occupancy, fit-out, deposits and delay costs. Use written terms and professional review for the actual agreement; a spreadsheet cannot confirm permitted use or release you from a guarantee.

Make the decision with all three checks

Check credible sales, the whole restaurant’s economics, and opening cash. A 10% rent ratio can still coexist with excessive food or labor costs. A higher ratio needs a defensible operating case, not a blanket declaration that every such restaurant must fail.

Use the rent calculator, then put the result into the opening workbook. If division and decimals are unfamiliar, the math lessons show the steps and let you practice.

Sources for the lease terms

The definitions of percentage rent, negotiated breakpoints and lease-defined sales are explained in Nolo’s commercial percentage-rent guide. For the additional charges in a triple-net lease, see Nolo’s guide to taxes, insurance and maintenance in NNN leases. All dollar examples above are fictional planning calculations, not quoted lease terms or market benchmarks.