Financial Projection Calculator
Use this free financial projection calculator to forecast your monthly revenue, gross profit, and net profit over 12 to 36 months. Enter a starting revenue, growth rate, gross margin, and fixed costs to see when your business turns profitable.
Your assumptions
Projected results over 12 months
Total net profit over the period
$23,503
Total revenue
$159,171
Ending monthly revenue
$17,103
Break-even month
Month 1
Monthly revenue & net profit
Illustrative model only. Figures compound your inputs and are not a forecast or financial advice.
How this calculator works
This financial projection calculator builds a simple month-by-month model from four inputs. It starts with your starting monthly revenue and grows it using compounding monthly growth: each month's revenue equals the previous month's revenue increased by your growth rate. So a 5% monthly growth rate compounds — month two is 5% above month one, month three is 5% above month two, and so on.
For each month it then applies your gross margin to find gross profit (revenue × margin), and subtracts your fixed monthly operating costs — rent, salaries, software, and other overhead that stays roughly flat regardless of sales — to arrive at net profit. The break-even month is the first month where net profit reaches zero or turns positive. The chart and totals update instantly as you adjust the inputs.
This is a deliberately simplified, illustrative model. It assumes a constant growth rate and a flat margin and fixed-cost base, which real businesses rarely have. A funding-ready plan needs detailed, defensible assumptions — month-by-month revenue drivers, cost of goods sold, hiring plans, cash flow, and seasonality. For example, if your fixed costs jump when you hire or sign a new lease, those step changes belong in a full projection. Use this tool to pressure-test your thinking, then build out the complete picture in your business plan financials.
Frequently asked questions
What is a financial projection?
A financial projection is a forward-looking estimate of how your business will perform financially over a set period — typically your revenue, costs, and profit month by month or year by year. It translates your assumptions about growth, pricing, and expenses into numbers, so you and your stakeholders can see whether the business is expected to be profitable and when. Projections are estimates, not guarantees, and they get more reliable as your assumptions get more grounded in real data.
How many years should I project?
Most business plans include three to five years of projections, with the first year broken out by month so you can see seasonality and the path to break-even. This calculator covers 12 to 36 months, which is the window most lenders and investors scrutinize most closely because it is the nearest term and the easiest to validate. Longer-range figures (years four and five) are useful for showing scale but carry far more uncertainty.
What growth rate should I use?
Be conservative and justify every assumption. A growth rate you can defend with evidence — past sales, signed contracts, comparable businesses, or a realistic marketing plan — is far more credible than an optimistic guess. Rather than anchoring on a single "industry average," model a base case you can support and then test more conservative scenarios. If a reviewer cannot trace your growth rate back to a reason, treat it as too high.
What's the difference between gross and net profit?
Gross profit is revenue minus the direct cost of delivering your product or service (cost of goods sold), and it is captured here by your gross margin percentage. Net profit is what remains after you also subtract fixed operating costs such as rent, salaries, software, and overhead. In this calculator, gross profit = revenue × gross margin, and net profit = gross profit − fixed monthly costs. A business can show healthy gross margins yet still post a net loss if fixed costs are too high.
Do investors and lenders need financial projections?
Yes. According to the U.S. Small Business Administration (SBA), a complete business plan includes a financial projections section, and lenders and investors expect to see projected income statements, cash flow, and a balance sheet before they commit funding. Well-supported projections show that you understand your numbers and have a credible path to profitability — which is exactly what funders are evaluating.
Looking for more? Find the exact sales volume that covers your costs with the break-even calculator, and see what funders look for in your numbers in our business plans for investors guide.
Turn these numbers into a funding-ready plan
This calculator gets you a quick projection. Optimus Business Plans turns your assumptions into full financial statements and a professional, investor-ready business plan.
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