Break-even and target profit
Constant price and unit cost, fixed costs and target profit. Whole-unit ceiling, profit curve and unreachable targets.
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- No upload
- Check before download
Constant price and unit cost, fixed costs and target profit. Whole-unit ceiling, profit curve and unreachable targets.
Calculations run locally and inputs are not saved automatically. Download an input backup before closing the tab. Input data, formulas and filenames are never sent. Only with your optional consent, Refentra sends aggregate counts of actions and outcomes, without input content.
What are the limits?
Maximum amount 1 trillion units; total 100 trillion cents. Up to 100 rows, 50 people, 20 tiers, 100 depreciation years, 1,200 schedule periods, 61 cash flows. IRR range −99% to 1,000% per interval, numerical candidates only. Rates: up to eight decimals. Backup: 1 MiB. CSV formula-leading text gets an apostrophe. Use decimal points, no thousands separators.
Amounts use two decimals in your stated unit. Exact decimal inputs; cent rounding half away from zero. Table sums balance. Largest fractional remainders receive shared cents; equal remainders use row order. No tax, fees, legal entitlement or current prices are inferred.
Non-monetary values are shown with up to ten significant digits. CAGR, fractional-year inflation and IRR use numerical approximations; IRR candidates are not a symbolic proof. CSV keeps the numeric values before display rounding.
q₀ = ⌈F/(P−V)⌉; q_T = ⌈(F+T)/(P−V)⌉; π(q) = q(P−V)−F
Calculate with your own assumptions
- Enter the inputs
Enter the fixed cost for one period, the variable cost and selling price per unit, and the target profit for the same period and currency. Enter decimals with a point and without thousands separators.
- Check a worked example
Fixed 18000, price 100, variable 20: contribution=80; 18000/80=225 units to break even. A target profit of 4000 needs (18000+4000)/80=275 units.
- Interpret and save the result
Whole units are rounded up. Check the profit at the reported quantity on the curve. The target quantity includes both the fixed cost and the target profit.
Method, errors and limits
Can I reopen editable inputs from the CSV?
The CSV is a report of the results, not a backup of your inputs. Download the separate JSON input backup before you close the page, then import it into this same tool to edit your assumptions again. Import accepts files up to 1 MiB and checks that the file belongs to this tool. Inputs are not saved automatically.
Which input mistakes should I check?
Don't mix monthly fixed costs with annual targets. If the price doesn't exceed the variable cost, no quantity can reach a positive required contribution. That is not a zero-unit success.
What are this model’s limits?
This model assumes a constant unit price and cost, with no capacity, demand, taxes or volume discounts. Quantities above 1 e 9 are outside the tool’s range. Save the CSV curve to compare your own assumptions.