The real cost of wasted time: how to calculate software ROI

“How much does this tool cost?” is almost always the wrong question. The right one is: “how much does it cost me to carry on like this?” Until the second figure is on the table, the first one will always look too expensive. Here is how to calculate software ROI, with three worked examples.

A €4,900 quote is easy to see. It is one line, one signature, one decision. The nine hours you spend every week writing quotes in Word, on the other hand, never show up in any account. They are not written down anywhere, and no invoice reminds you of them. That is exactly why you pay for them without ever counting them.

Calculating software ROI in four steps

1. Your real hourly cost

For an employee, take the annual gross salary, multiply it by 1.45 (employer social contributions) and divide by 1,600 hours worked. An employee on €32,000 gross therefore costs about €29 an hour.
For a business owner, the reasoning changes. Your hour is not worth your salary, it is worth what it brings in when you spend it elsewhere: with clients, on a job site, recruiting. Depending on the trade, that is between €60 and €100 an hour.

2. The time actually lost

Do not estimate it from memory: everyone gets it wrong. Time one week, task by task, and also note the time spent fixing the errors that your current method creates. That is often where half the figure is hiding.

3. The annual cost of the status quo

Hours lost per week × 45 weeks × your hourly cost = what you are already paying, without seeing it.

4. The break-even point

Divide the project price by the monthly saving. The result is the number of months before the tool has paid for itself. Under six months, there is nothing left to debate. And since the project is paid for once, everything that comes after is a gain.

Paid once, or paid every month?

This is the question people forget to ask, and it is the one that costs the most over time.
A subscription ERP is often billed at around €45 per user per month. For a 15-person company, that comes to €8,100 a year. Every year. And the day you grow to 25 employees, the bill rises to €13,500 without the tool having changed.
Let’s compare over five years, for the same 15 people:

• Subscription ERP: €8,100 × 5 = €40,500. After five years, you own nothing, and if you stop paying, you lose the tool.
• Custom-built tool: €10,000 when you order, hosting included for the first year, then from €180 a month. That is €18,640 over five years. And it belongs to you.

The gap exceeds €20,000 over five years, and it widens with every new hire. To be honest, a custom tool needs hosting and maintenance: it is not free after delivery. But that cost depends on your infrastructure, not on the number of people who use it.

A subscription makes you pay for your growth. A tool you own does not.

Case 1: Friday-night quotes

A construction company with 8 employees. The owner prepares quotes and invoices in Word, starting from old files. Usually in the evening and on Saturday mornings.

• Time measured over one week: 9 hours
• Owner’s hourly cost: €70 (an hour of their time spent with clients brings in more)
• Annual cost of the status quo: 9 × 45 × 70 = €28,350

The solution: an ERP configured and ready to run, from €4,900 excl. VAT, including first-year hosting. Importing the catalog and training the team are quoted as options, depending on the volume to import.
After the switchover, 2.5 hours a week remain (approvals, special cases). The saving is 6.5 hours a week, or 6.5 × 45 × 70 = €20,475 a year, which is €1,706 a month.
Let’s be generous and budget €7,000, options included.

€7,000 paid once, €1,706 saved every month: paid back in 4 months.

And the following year? The project is already paid for. Only hosting remains, from €180 a month. The owner gets their Saturday mornings back, every year, without ever paying for the software again.

Case 2: double entry between the online store and sales management

A wholesale SME with 15 employees. Orders from the online store are re-entered by hand into the sales management software by two people.

• Combined time: 15 hours a week
• Fully loaded hourly cost: €28
• Annual cost of the status quo: 15 × 45 × 28 = €18,900

On top of that comes a cost nobody counts: about 2% of orders contain a data entry error. That means credit notes, re-shipments and customers who do not come back.
The solution: a tool built around their working methods, synchronized with the store, from €10,000 excl. VAT. Not a generic software package you have to shoehorn your habits into, but a tool that follows the way they sell.
After the switchover, 1.5 hours a week remain to check special cases. The saving is 13.5 hours a week, or €17,010 a year, which is €1,417 a month.

Paid back in 7 months. From the second year on, €17,000 stays in the company, every year.

The same need met by a subscription would have cost €8,100 a year for 15 people, indefinitely, with a tool that only half fits.

Case 3: payment reminders that never go out

A services SME with 30 employees and €1.2M in revenue. Nobody chases unpaid invoices systematically, because nobody has the time.

• Actual payment time: 68 days, versus the 45 set in the contract
• Those 23 extra days tie up 1,200,000 × 23 / 365 = €75,600 in cash on the clients’ side

The solution: an ERP with an automatic payment reminder module. Budget for the core system from €4,900 excl. VAT, plus the optional module. Payment time falls back to 48 days.
The calculation differs from the first two cases, and honesty matters here: the €65,700 that comes in is not additional profit. It is your own money, which was sitting with your clients, coming back to you. Once. But it does not leave again, and you no longer have to finance that gap.

Even budgeting €8,000 all-inclusive, you get back eight times your outlay in the first year, plus 2 hours of chasing a week.

What the calculation does not show

The figures above are deliberately conservative, because they only count time. They miss everything else:

• Errors avoided, and everything they cost downstream
• Deals won because the quote goes out the same day rather than three days later
• Teams that stay, because nobody resigns from a job where the work makes sense
• Growth absorbed without hiring: this is often the biggest gain, and the least visible

The three pitfalls of the calculation

1. Time saved is only a gain if it is reallocated. Freeing up 6 hours a week for someone who will spend them on something else useless brings in nothing. Decide in advance where those hours go: sales, production, or deliberate rest.
2. Count measured time, not perceived time. One week of honest tracking is worth more than three estimation meetings.
3. Do not forget the cost of switching. Training, an adjustment period, sometimes a few weeks of double entry. Include it, or your calculation is wrong and your disappointment guaranteed.

Frequently asked questions

Several thousand euros is still a lot of money. How do you justify it?

By comparing it with the right figure. If your current way of working costs you €28,000 a year in lost time, the real expense is not the €4,900 quote, it is the year you have just spent without changing anything. A project paid back in three months is not a cost, it is an investment whose return you know in advance.

Why custom software rather than an off-the-shelf product?

Because a software package makes you pay 100% of the price for 20% of useful features, and asks you to adapt your methods to its own. When your methods are your added value, you need to do exactly the opposite. And over five years, the subscription often costs twice as much.

What if the tool costs more than the time saved?

Then do not buy it. That is precisely what the calculation is for. Some needs do not justify a development project, and a good provider will tell you so before selling you anything.

How long before you really see the gain?

Rarely in the first month. Allow two to three months: time for the tool to be configured, for the team to master it and for old habits to disappear. The ROI calculation must factor in this ramp-up period.

Do the math before you sign

At 411bit, we always start with this costing. What your current situation costs, what the solution would cost, and how many months it takes to pay for itself. Our quotes are firm, and when the numbers do not add up, we say so. That is easier to stand behind than a tool that was sold and never gets used.
Let’s talk about what your current way of working costs you, or read our article on where to start with digitalizing an SME.