Finance

Startup Return on Investment Calculator (15 Years)

Calculate return on investment as a percentage. This startup version uses a 15-year planning term as its starting point.

The Return shows the whole-period gain or loss as a percentage of the amount invested, so a positive figure means money was gained overall, a negative figure means money was lost overall, and it is not a yearly rate.

Formula

Return equals final value minus invested amount, divided by invested amount, times 100.

How it works

A positive return means the final value is higher than the amount invested.

Worked example

Amount invested $10,000, final value $15,000, term 15 years. Using the page formula, the gain is $15,000 minus $10,000, which is $5,000. The return is $5,000 divided by $10,000, times 100, which is 50.00%. That is the calculator's own result for these defaults, and it is the same on every page in this group because the term is not an input: only the amount invested and the final value decide the answer.

As a labelled illustration only, not a second output of this page, the steady yearly rate that would grow $10,000 to $15,000 over 15 years is 2.74% a year. That is lower than the simple average of 3.33% a year, which divides the 50% gain evenly and ignores compounding.

Who this term suits for a startup founder: a maturing startup weighing whether to expand, buy out an early partner, or sell a stake, where a 15-year return must be judged against the risk and effort tied up over that whole period.

FAQs

What is a good ROI?
There is no single good figure. Compare returns over the same period and with the same risk before deciding.

Is this startup calculator exact?
No, it is an estimate for planning only, based on the numbers you enter.

Are these figures financial advice?
No, they are estimates for planning only, not financial advice. Check with a qualified adviser for decisions involving large sums.

Is 50% over 15 years still a good startup return?
It is modest when spread over 15 years. The steady yearly rate that would grow $10,000 to $15,000 over 15 years is 2.74% a year, so the question becomes whether tying money up for 15 years was worth that pace.

Does this ROI include startup rent and wages?
No. This page uses only the amount invested and the final value. Rent, wages, stock, fees, and taxes are not counted, so a real startup return must be judged after those costs, not from this figure alone.

What if the final value falls to $9,000?
The gain would be $9,000 minus $10,000, which is minus $1,000, and the return would be minus $1,000 divided by $10,000, times 100, which is -10.00%. A negative return means money was lost, and the page formula shows that plainly.

Estimates only, not financial advice. Figures are approximate and do not include all fees, taxes, or changing rates unless stated.