Break Even Analysis Calculator

Break-even asks how much sales volume would cover the costs you include. Compare the theoretical threshold with the minimum volume in your chosen sales increment. Add a profit target or a planned sales volume to see what that plan would produce. A negative margin of safety means planned sales fall below the continuous break-even threshold.

Required sales are not a prediction of customer demand or available capacity. This model does not establish liquidity, financing approval or business viability. Review payment timing, working capital, startup cash, taxes and your own compensation separately. No other calculator is assumed to be available or required.

Use a single net selling price after known discounts, excluding pass-through sales taxes. The unit can be an item, service appointment, job or billed hour if price and variable cost remain constant for that unit. Set a sales increment to match what you sell or bill. This does not define timekeeping, productivity or labor-law rules. Services with different rates, bundles or cost behavior need separate modeling.

Fixed costs are entered directly for the selected Monthly or Annual period; there is no frequency conversion. If you prepare monthly averages from annual totals, divide by 12; for a quarterly total, divide by 3. Averages do not predict actual bill timing. Changing the reporting period does not convert stored costs, profit targets or planned volumes. Review those values and confirm before calculating again.

Detailed prompts cover premises, fixed payroll or owner compensation deliberately included as expense, insurance/licenses, software/administration, depreciation, interest and other fixed costs. Variable prompts cover materials/merchandise consumed, packaging, variable labor/subcontracting, fulfillment, commissions/payment fees and other variable costs. Add custom items within a group. Actual cost behavior determines classification. Split mixed costs and include each portion once.

Enter a known dollar fee per sold unit. A fee per order may cover several units; allocate it on a defensible per-unit basis rather than treating every order as one unit. There is no automatic percentage-fee or discount engine. Exclude owner draws and loan principal as expenses. Distinguish depreciation from asset purchases, cost of units sold from inventory cash purchases, and recurring costs from deposits/startup spending. Unused, included, unknown and excluded rows remain distinct. Included zero means confirmed zero; unresolved unknown rows block calculation until resolved or explicitly excluded.

Let F be entered fixed costs per selected period, P net price per unit, V variable cost per unit, C = P − V and s the sales increment. At sales volume q, revenue = P × q, variable cost = V × q, total cost = F + V × q, and modeled profit = C × q − F. Contribution margin ratio = C ÷ P when P is positive. The output is modeled profit before income tax, after entered costs, including any entered interest or depreciation. It is not guaranteed accounting net income, profit before interest, after-tax earnings, owner take-home pay or available cash.

When C is positive, continuous break-even Q = F ÷ C and continuous sales = P × Q. Minimum achievable volume rounds Q UP to a multiple of s, and revenue, total costs and actual profit are evaluated at that volume. For a supplied target T, continuous target volume = (F + T) ÷ C, rounded UP in the same way. Blank target skips that separate result; explicit 0 requests zero profit. At F = 0, the increasing-profit threshold is zero, which does not prove viability.

For a supplied planned volume q and positive C, margin of safety uses the continuous threshold: units = q − Q; sales = P × (q − Q); percentage = (q − Q) ÷ q × 100 only for q greater than zero. Negative values remain visible. A zero plan has no applicable percentage. Practical threshold attainment is shown separately. When C is zero with positive F, all volumes produce the same loss. When C is negative with positive F, no nonnegative volume breaks even and more sales increase losses. When F and C are both zero, all supported volumes yield zero profit with no unique threshold. When F is zero and C negative, only zero volume breaks even. Positive profit targets are unreachable in these nonpositive-contribution cases. Planned results remain available; margin of safety is not fabricated.

Money inputs and each included cost accept cents from $0 to $100,000,000; aggregate F and V have the same cap. Planned volume accepts 0 to 100,000,000 units with two decimals and must be a multiple of s. Whole-unit mode uses s = 1; service increments range from 0.01 to 1,000 with two decimals. Up to 200 worksheet rows, 120 characters per label and 500 characters per scope note are supported. These are tool limits, not financial rules. Blank required amounts are not zero. All decisions use exact fractions, with money displayed half up to cents and signed ties away from zero. Subcent amounts remain in the model; exact detail and CSV numerator/denominator columns permit reconciliation.

The sensitivity comparison is a deterministic sample of at most 101 rows: zero, evenly spaced increment-aligned points, supplied planned volume, theoretical/practical break-even and target landmarks and nearby increments. Duplicate exact quantities combine labels. The chart range is based on the positive plan, otherwise practical break-even, otherwise 100 units, expanded by 25% and at least ten increments, capped at 100 million units. A nearby target may extend the chart up to twice the initial range; exceptional landmarks stay in the complete table/CSV/report. Off-increment theoretical rows are labeled. The sample is not every possible volume. The charts show sales volume, not dates. All values follow the same linear model.

Calculations occur locally without accounts or application-managed storage. Reloading clears entries; exports include supplied information. The calculator does not connect accounts, transmit financial inputs or place them in URLs. This source review does not certify unrelated host scripts or plugins. Multiple products, variable pricing, ratio-only models, tax rules, pricing optimization, working-capital timing and startup cash forecasting are outside this release.