Direct answer: what break-even revenue means here
If owner payroll is included in fixed costs, model the cash runway separately with the owner salary and runway calculator.
Operating break-even is the sales level where total operating revenue equals total operating cost, so operating profit is zero. SBA presents break-even as a business-plan estimate, with both unit and sales-dollar formulas, and cautions that estimates do not perfectly determine accounting or financing outcomes [1]. For a ROBS-funded business, the calculation can help test whether period operating assumptions can cover rent, payroll, insurance, professional support, ROBS administration, valuation, and other recurring obligations. It does not show whether the retirement-plan stock purchase was prudent, whether the company is solvent, whether customers will appear, or whether the ROBS structure fits the owner.
What to include in fixed and variable costs
Fixed operating costs
Fixed costs are period costs that do not change directly with the increase or decrease in production or service volume [1]. Rent, salaried payroll, base insurance, professional subscriptions, recurring ROBS administration, valuation support, accounting, and debt interest may be fixed costs when they belong in the period and match the cash or accounting purpose of the worksheet.
Variable operating costs
Variable costs move with sales volume. Inventory, direct materials, payment fees, commissions, packaging, delivery, and direct unit labor commonly belong here. Semi-variable costs should be split between fixed and variable parts when possible, consistent with SBA’s break-even guidance [1].
Exclude income taxes, financing principal, owner distributions, depreciation, amortization, and other noncash items unless you deliberately include them for an accounting-purpose worksheet. Keep the purpose visible: a cash break-even view may include debt interest and ROBS administration as cash obligations, while an accounting view may treat depreciation differently. Good records help monitor progress, prepare statements, identify income sources, and track expenses [4].
How ROBS changes the context, not the formula
The IRS describes ROBS arrangements as rollovers into a qualified plan that purchases stock of a new C corporation and notes that a determination letter does not approve plan operations [3]. That means this calculator should be used only as an operating worksheet beside ROBS compliance, fiduciary, valuation, filing, and recordkeeping duties. SBA planning materials also place break-even inside broader business planning that includes market research, financial projections, and funding needs [1]. A favorable break-even threshold does not prove demand, lender approval, retirement diversification, adequate working capital, or legal compliance.
FAQ
What does this break-even calculator measure?
It measures operating break-even from the numbers entered: fixed operating costs and either contribution-margin ratio or unit contribution margin. It does not value the company, test solvency, forecast demand, recommend pricing, decide taxes, or decide whether ROBS funding is suitable.
Should I use ratio mode or unit mode?
Use contribution-margin ratio mode when you know contribution as a percentage of sales dollars. Use unit economics mode when you know a sales price per unit and the variable cost tied to one unit.
Can I add a target profit?
Yes, but target profit is shown separately from pure break-even. Pure break-even solves for zero operating profit. Target profit solves for fixed costs plus the entered profit target.
How should I treat ROBS administration and valuation fees?
If the worksheet is for cash operating break-even, recurring ROBS administration, valuation, payroll, rent, insurance, and debt interest can be included in fixed costs when they are period cash obligations. Financing principal, owner distributions, income tax, depreciation, and other noncash items should be excluded unless deliberately included for a separate accounting-purpose worksheet.
Are current revenue or units a forecast?
No. They are only a gap or surplus comparison against the calculated threshold. They do not estimate whether the business will achieve that volume.
Sources and verification
This tool uses official small-business and IRS sources for break-even formulas, business planning limits, ROBS context, and recordkeeping. It contains no affiliate lead form, does not ask for contact information, and does not store browser data.
- 1. SBA Plan your business
SBA defines break-even as total cost equaling total revenue, provides the unit formula fixed costs ÷ (price − variable cost), gives the sales-dollar formula fixed costs ÷ contribution margin, describes contribution margin, and cautions that break-even estimates support business planning and lender viability rather than perfect accounting or financing certainty. Checked Aug. 13, 2026; page modified July 30, 2026.
- 2. SBA Manage your business finances
SBA states that accounting for revenue and expenses helps keep a business running smoothly and highlights cash, receivables, payables, payroll, and tax obligations as finance-management topics. Checked Aug. 13, 2026; page modified July 30, 2026.
- 3. IRS ROBS compliance project
IRS describes ROBS as rollover assets used by a qualified plan to buy new C corporation stock and states determination letters do not approve operations; it identifies Form 5500, Form 1120, valuation, prohibited-transaction, recordkeeping, business failure, bankruptcy, lien, and dissolution concerns. Checked Aug. 13, 2026; page last reviewed Nov. 16, 2025.
- 4. IRS Recordkeeping
IRS says good records help monitor business progress, prepare financial statements, identify income sources, track deductible expenses, prepare tax returns, and support items reported on tax returns. Checked Aug. 13, 2026; page last reviewed May 1, 2026.