The real cost of IT downtime for Singapore SMEs (do the maths in 5 minutes)

Industry surveys put the cost of IT downtime for small businesses anywhere between US$1,000 and US$25,000+ per hour. That range is too wide to use in your budget meeting. Your number depends on your revenue, your headcount and how much of your work stops when systems stop. You can work it out on a napkin in five minutes. For a typical 30-person, S$3M-revenue services firm, the maths below lands around S$1,700 per hour, before recovery costs. The bigger risk is the length of an outage, because serious incidents are measured in days.

Why downtime feels free, until it isn't

When a shop's shutter jams, everyone sees the customers walk away. When a server dies, the walking-away is invisible. Quotes don't go out, orders sit in carts, invoices don't get raised, and thirty people switch to "waiting mode" on full salary. Because nobody sees the queue leaving, downtime rarely makes it into the budget. It gets paid for later, in a lump.

The napkin maths: your downtime cost per hour

Add three lines, then note a fourth you can't compute:

1. Revenue you can't book. Annual revenue ÷ 2,000 working hours × the share of your revenue that needs systems to happen. If you can't quote, sell, bill or deliver without IT, that share is high.
2. Payroll burning while people wait. Affected staff × loaded hourly wage × how much of their work stops. People don't go to zero. They work 40–70% less.
3. Recovery. Ad-hoc IT hours at S$120–250/hour, plus any work that has to be re-done because it lived on the thing that died.
4. The multiplier you can't compute. Missed SLAs, penalty clauses, the client who starts a second vendor search. This line has no formula. It makes every number above bigger.

A worked example

A 30-person services firm doing S$3M a year, where roughly 70% of work needs systems: revenue line = S$3,000,000 ÷ 2,000 × 70% ≈ S$1,050/hour. Payroll line = 30 staff × ~S$35/hour loaded × 60% stopped ≈ S$630/hour. That's roughly S$1,700 per hour before a single recovery dollar, or S$13,000–14,000 for one dead working day. Run your own numbers. Our example matters less than yours, which takes five minutes and settles the "is IT spending worth it" debate with arithmetic.

The hours aren't the danger. The days are.

A power blip costs you an afternoon. A ransomware incident costs you weeks: average ransomware-related downtime ran around 24 days in 2025 surveys. The spread is what should interest you. About half of businesses now recover within a week, but only 16% manage it within a day. The difference between the one-day companies and the three-week companies is preparation: tested backups, a written response plan, and someone who has done this before.

Multiply your napkin number by a three-week outage and you'll understand why the Backup and Respond areas of the Cyber Essentials framework exist. Those two areas decide whether your bad day is a Tuesday or a quarter.

What shrinks the number

There are two levers, and they work on different parts of the maths:

• Fewer incidents (prevention). Monitoring catches the failing disk before it fails, and patching closes the hole before it's used. This is the routine work inside a managed IT arrangement, and it reduces how often the meter starts running.
• Faster recovery (preparation). Tested restores and an agreed recovery time. In our price guide we noted that "we back up nightly" is cheap while "we can restore your operations within 4 hours" is not. Your napkin number is how you decide whether the expensive version pays for itself. At S$1,700/hour, a service that turns a 3-day outage into a 4-hour one is worth about S$40,000 per incident.

Not every business needs the gold plan

A 5-person firm that can work off phones and hotspots for a day has a small napkin number, so match the spending to it. A clinic that can't see patients, a logistics firm that can't dispatch or an agency on client deadlines has a big number and should spend accordingly. Downtime protection is insurance. You size it to the building, not to the salesman's enthusiasm.

Frequently asked questions

How much downtime is "normal" for an SME?

With proactive monitoring, unplanned downtime should be minutes per month, not hours. Most SMEs without monitoring lose several hours a month. They never log it, so it never becomes a line item. Your staff know the real answer, so ask them how often "the system is slow or down" costs them time.

We're fully on cloud. Doesn't that mean no downtime?

It means less server downtime, but not none. Cloud services have outages too, and your office network, devices and accounts are usually the weaker link. Cloud moves the problem, but you still need the napkin.

What's an RTO and why does it matter?

Recovery Time Objective: the agreed maximum time to get you running again. It's the number that turns "we have backups" into a promise you can hold someone to. Ask your provider for it in writing. The reaction tells you a lot.

Are backups enough to keep us running?

Backups protect your data, but by themselves they don't keep the business operating. Restoring systems, access and workflows takes its own plan. We cover that in backup vs business continuity.

Our approach

Everything in our managed IT model is aimed at the two levers above: monitoring and patching to make incidents rare, and tested backups with an agreed RTO to make them short. The monthly fee pays for both.

Done the napkin maths and didn't like the number? Book a discovery call. Bring your figure, and we'll show you which parts of it a managed arrangement removes and at what cost.