How to calculate the ROI of HR software in your SME (with a 30-employee example)

HR software for an SME costs between a few tens and a few hundred euros a month. The question is not whether it is expensive, but whether it returns more than it costs, and that can be worked out with a spreadsheet and ten minutes. In this article we explain how to calculate the ROI of HR software without inflating figures: which costs really count, which savings can be measured, which ones to leave out, and a full example for a 30-employee SME that you can redo with your own data. If you first want market prices, see our guide on how much HR software costs for an SME.

The formula, no mystery

Return on investment is calculated as follows:

ROI = (annual benefit − annual cost) / annual cost

An ROI of 3 means that for every euro you pay you get that euro back and gain three more. The useful complement is the payback period: how many months it takes for the savings to cover what you paid. With subscription software and no lock-in the period is usually short, because there is no upfront investment to amortise.

The hard part is not the formula but not fooling yourself on either side: counting all the costs and counting only the savings you can measure.

Cost side: everything you pay

1. Licence. Price per employee per month, multiplied by active employees and by twelve. With LapsoWork, €2 per employee per month on the Basic plan and €3.50 on Advanced, with no minimum headcount.
2. Implementation and migration. Some providers charge for initial setup and data migration; others include it. Ask beforehand: in our pricing guide we explain it is the most frequent hidden cost. LapsoWork migrates data from Excel or the previous software at no cost.
3. Internal set-up time. The hours your team spends configuring calendars, registering staff and training. Usually few, but count them: multiply hours by the hourly cost of the person involved.
4. Lock-in. Not a direct cost, but a risk: an annual contract you cannot cancel if the software does not work is a potential twelve-month cost. Without lock-in, the risk is one month.
5. Modules you will activate later. If you know you will need shifts or a whistleblowing channel within months, calculate with the plan that includes them, not the entry plan.

Benefit side: only what you can measure

Administration hours that disappear

It is the main saving and the easiest to measure. For two weeks, note how much time the person handling staff spends on: chasing clock-ins and reconciling hours, handling leave requests by WhatsApp or email, distributing payslips and collecting signatures, looking for contracts and certificates, and preparing documentation when the accountant or the Inspectorate asks for it. Multiply by 26 fortnights and by that person’s hourly cost (gross salary plus contributions, divided by annual hours). That is the gross saving; subtract the time they will still spend with the software, which is not zero.

Errors that stop costing money

Leave deducted wrongly and recalculated, payslips with variables miscommunicated to the accountant and redone, lost documents requested again. Count last year’s and put a cost on each in hours and, if applicable, in money refunded or overpaid. It is a real saving, but usually smaller than the hours.

Penalty risk, sensibly

Not keeping a working-time record is a serious infringement under article 7.5 of the LISOS, fined between €751 and €7,500. It is tempting to put the maximum figure in the benefits column; do not. If you want to include it, use an expected value: the fine you would face multiplied by the probability you assign to an inspection in a year. And remember that the software does not remove the risk; clocking in properly does. See our table of time-tracking penalties for the detail.

What not to include

Talent retention, workplace climate, employee productivity or absenteeism are real effects but almost impossible to attribute honestly to the software. Leave them out of the calculation and mention them as unquantified benefits. An ROI that holds up on hours and errors alone is an ROI you can defend to management.

Example: a 30-employee SME

The figures in the example are assumptions so you can see the method; replace them with yours.

Annual cost

• Licence: 30 employees × €2 × 12 months = €720 (LapsoWork Basic plan).
• Implementation and migration: €0 (included).
• Internal set-up time: say 6 hours at €20/hour = €120, first year only.
• Total first year: €840. Following years: €720.

Annual benefit

• Administration hours: say the person handling staff currently spends 15 hours a month on clock-ins, leave, payslips and documents, and with the software drops to 5. Saves 10 hours a month, 120 a year, at €20/hour = €2,400.
• Errors avoided: say 4 incidents a year (leave recalculated, payslips redone) at 2 hours each, plus €300 overpaid in one of them = €160 + €300 = €460.
• Penalty risk: say a 10 % probability of inspection in the year and a minimum-degree fine of €751: expected value €75. We include it for completeness; you could set it to zero.
• Total: €2,935.

Result

• First-year ROI: (2,935 − 840) / 840 = 2.5. For every euro paid, you recover the euro and gain two and a half.
• Payback period: €840 / (€2,935 / 12) = 3.4 months.
• From the second year, with €720 of cost, the ROI rises to 3.1.

If your 15 hours a month are really 8, the ROI drops; if they are 25, it rises. That is why the step that matters is measuring current hours for two weeks, not copying the example.

What to do with the result

• If the ROI comes out high with realistic hours, the software pays for itself and the discussion should move to which one to choose. Our guide to the ten mistakes when implementing HR software helps you not lose the return during implementation.
• If it comes out tight, review the cost side: a product with paid implementation and annual lock-in can turn a positive ROI negative in the first year. Compare with public prices, as we did in the HR software price comparison.
• After implementing, measure again. The same two weeks of noting hours, six months later, give you the real ROI rather than the forecast. The human resources metrics you can pull from the software itself complete the picture.

Frequently asked questions

How is the ROI of HR software calculated?

By subtracting the annual cost (licence, implementation, internal time) from the annual benefit (administration hours saved, errors avoided and, cautiously, reduced penalty risk) and dividing the result by that cost. An ROI of 2 means you recover what you paid and gain twice as much. The payback period shows in how many months the savings cover the cost.

Which savings can I include without inflating the calculation?

The administration hours eliminated, measured over two weeks before implementing, and last year’s errors with their cost in hours and money. Talent retention, workplace climate or productivity are real benefits but hard to attribute to the software; mention them without putting a figure on them.

How much does HR software cost for 30 employees?

With LapsoWork, €720 a year on the Basic plan (€2 per employee per month) or €1,260 on Advanced (€3.50), with no lock-in or implementation cost. In the Spanish market entry prices range from €2 to more than €8 per employee per month, and some providers also charge for implementation.

Should I count avoided fines as a benefit?

Cautiously. The fine for not keeping a working-time record ranges from €751 to €7,500 as a serious infringement; do not put the whole amount in. Use an expected value (fine times probability of inspection) or leave it out and mention it as reduced risk. The ROI that holds up is the one that rests on hours and errors.

How long does it take to recover the investment?

With subscription software and no implementation cost, usually a few months, because there is no upfront investment to amortise and the hours saving starts in the first month. In the 30-employee example, with moderate assumptions, the payback is about three and a half months.

Conclusion

Calculating the ROI of HR software in an SME requires no consultants: count everything you pay, measure for two weeks the hours you spend today administering staff, and be cautious with what you cannot measure. With that data the decision stops being a feeling. And if you want the measurement to be real rather than an example, try LapsoWork free for 30 days and compare the hours before and after; prices are on our pricing page.