About the Financial Projection Calculator
This financial projection calculator turns a handful of assumptions — first-year revenue, a growth rate, gross margin, operating expenses and tax — into a year-by-year forecast of revenue, gross profit, operating profit, net income and cash balance for three, four or five years. It is the quick first draft of the projected income statement that lenders, investors and business-plan templates ask for.
Founders writing a business plan, small-business owners applying for an SBA or bank loan, and students building a startup model can use it to test whether their plan reaches profitability, how fast, and how much cash it generates or burns along the way. Change one assumption at a time to see which driver matters most.
The model is deliberately simple: revenue grows at a constant annual rate, cost of goods sold is a fixed percentage of revenue, operating expenses grow at their own rate, tax is charged only in profitable years (no loss carry-forward), and annual cash flow is approximated by net income — it ignores capital spending, loan repayments and working-capital swings, which you should add for a full plan.
With the default inputs, the net income in final year is $289,453.53. Change any value above to recalculate instantly.
How to use the financial projection calculator
- 1Enter expected first-year revenue and an annual growth rate.
- 2Enter your gross margin — the share of revenue left after direct costs.
- 3Enter first-year operating expenses and how fast they will grow.
- 4Set your income tax rate, projection length and starting cash.
- 5Review the yearly table and chart, then adjust assumptions to stress-test the plan.
Formula and method
Each year, revenue compounds at the growth rate from the year-1 figure. Gross profit is revenue multiplied by the gross margin (so cost of goods sold scales with sales), and operating expenses compound at their own growth rate, which lets you model operating leverage when overheads grow more slowly than sales.
Tax is charged at the flat rate only on positive operating profit; losses are not carried forward, which slightly overstates tax for a startup that loses money early. Interest, depreciation and non-cash items are not modelled separately, and the cash line treats net income as cash flow. Treat the result as a top-down sanity check, then add capital expenditure, financing and working capital for a lender-ready forecast.
- R₁
- Year 1 revenue
- g
- Annual revenue growth rate
- GM
- Gross margin (% of revenue)
- OpEx₁
- Year 1 operating expenses
- gₒ
- Annual operating expense growth rate
Worked examples
Growing product business, 5 years
Revenue grows 25% a year from $500,000 to about $1.22M in year 5. With a 60% gross margin and overheads growing only 10% a year, year-5 net income after 21% tax is about $289,454, and cumulative profit of $739,309 lifts cash to about $839,309.
Service firm, 3-year plan
Revenue reaches $1.21M by year 3. Gross profit of $484,000 less $318,270 of overheads leaves $165,730 operating profit, or $124,297.50 after 25% tax. Three years of profit add $297,548 to cash.
Startup that loses money at first
Early revenue is too small to cover $300,000 of overheads, so years 1–3 lose money. Fast 50% growth turns an operating profit in year 4, and by year 5 net income is about $271,838, leaving the five-year total slightly positive at about $90,005.
Frequently asked questions
How many years should a business plan projection cover?+
Most lenders and investors ask for three to five years, with the first year often shown monthly. Beyond five years the assumptions become too uncertain to be useful for a small or new business.
What growth rate should I assume?+
Base it on evidence: your current sales trend, signed contracts, market size and comparable companies. Many plans show a base case plus a conservative and an optimistic case so readers can see the range of outcomes.
What is the difference between gross margin and net margin?+
Gross margin is revenue minus cost of goods sold, divided by revenue. Net margin is what remains after all expenses, interest and tax, divided by revenue, so it is normally well below gross margin.
Why is net income not the same as cash flow?+
Net income includes non-cash items such as depreciation and ignores capital purchases, loan principal and changes in receivables, inventory and payables. A full plan adds a cash flow statement to reconcile the two.
Does this calculator handle tax losses?+
No. Tax is charged only in years with an operating profit and losses are not carried forward, so a startup that lost money earlier may pay less tax in reality than shown here.
Results are estimates for educational purposes and are not financial advice. Rates, fees and terms vary — confirm with your lender or a licensed advisor before making decisions.