Break-Even & Cash Flow Calculators
Five calculators and the operational guides that go with them. These tools answer the most pressing operational questions in early-stage business: how many units must you sell to cover costs, when does cash run out, and which months will be tight.
Profitable businesses go bust every day — almost always because of timing, not profit. The customer paid in 60 days; rent was due tomorrow. Cash flow management is what separates businesses that survive their first 24 months from those that don't.
Start with the Break-Even Calculator if you're validating a new product or pricing decision. Use the Cash Flow Calculator monthly to project 12 months ahead — most cash crises are visible 3–6 months out if you bother to look. The Burn Rate Calculator is specifically for startups burning investor capital; it tells you exactly how many months until cash exhaustion.
Pair the calculation with the guide. The break-even examples article walks through five real industries; the cash flow management guide gives you the seven habits that prevent a crunch.
Calculators in this topic
Break-Even Calculator
Find the units and revenue needed to break even.
Open calculator →Cost Per Unit Calculator
Calculate production cost per unit from total costs.
Open calculator →Cash Flow Calculator
Project 12-month cash flow from income and expenses.
Open calculator →Burn Rate & Runway Calculator
Months of runway from cash on hand and monthly burn.
Open calculator →Invoice Calculator
Build invoice totals with tax in seconds.
Open calculator →Guides
How to Calculate Your Break-Even Point (With Examples)
Step-by-step break-even analysis for any business — including the contribution-margin shortcut.
Read →5 Break-Even Analysis Examples Across Different Industries
Walk through real break-even calculations for a coffee shop, SaaS, ecommerce store, agency, and manufacturer.
Read →7 Ways to Reduce Cost Per Unit in Your Business
From bulk buying to automation to redesign — practical levers to drive down unit cost.
Read →Cash Flow Management for Small Business: A Practical Guide
Why profitable businesses still go bust — and the seven habits that prevent a cash crunch.
Read →Startup Runway and Burn Rate: The Founder's Guide
How long is your runway, and how to extend it before fundraising becomes desperate.
Read →UK Invoice Requirements: What Must Be on Every Invoice
Legal requirements for UK invoices, VAT invoices, and what HMRC wants to see if you're audited.
Read →
Break-Even & Cash Flow — frequently asked questions
How do I calculate my break-even point?
What's the difference between break-even and cash flow?
How much runway should a startup have?
What goes in fixed vs. variable costs?
Related topics
For information only. This calculator does not constitute financial, accounting, or tax advice. Consult a qualified professional before making business decisions.