How to Calculate the ROI of New Software for Your Business

Why Measure Software ROI?

Software is easy to buy and easy to forget. A simple return-on-investment calculation tells you whether a tool is worth its cost before you buy, and whether it earned its place a year later.

The Basic Formula

ROI = (annual benefit − annual cost) ÷ annual cost. Anything above zero means the tool pays for itself; the higher, the better. The skill is in counting both sides honestly.

Count the Real Cost

Subscription fees across the year, including extra users
Hardware, setup and data-migration costs, spread over the expected life
Payment-processing or transaction fees that change because of the tool
Staff time for training and set-up

Count the Benefit

Time saved: hours per week saved multiplied by the real hourly cost of the person doing the task. Only count time if you will use it for something valuable or reduce paid hours.

Revenue gained: extra bookings from online scheduling, fewer no-shows from deposits, or more repeat sales from email marketing. Use a conservative estimate.

Costs avoided: late-payment fees, stock write-offs, penalties for missed tax deadlines or errors you will no longer make.

A Worked Example

A salon pays £40 a month (£480 a year) for booking software with deposits. It saves four hours of phone admin per week at £12 an hour (about £2,500 a year) and cuts no-shows by two a month at £35 each (£840 a year). Benefit is about £3,340 against a cost of £480, so ROI is roughly 590%. Even if you halve the benefit, the case holds.

Set a Review Date

After three and twelve months, compare the real numbers with your estimate. Cancel or renegotiate tools that fall short, and note what worked for your next purchase.