What does invisible work actually cost your business?
Most founders know invisible work is a problem. Very few have put a number on it. The number, once you calculate it, tends to be uncomfortable.
This page explains how to do the calculation for your own business, what the typical range looks like across different roles, and what those numbers mean in practice — including whether fixing the problem makes financial sense.
If you are not yet sure what invisible work is, start there.
The formula
The calculation is straightforward. You need three numbers: your effective hourly rate, the average hours per week you spend on work that does not require your expertise, and the number of working weeks per year.
Use your billable rate, day rate divided by 8, or annual salary divided by 1,600 hours as your hourly proxy.
The result is not what admin costs you in salary or tools. It is what it costs you in expertise: the value of the time that disappears into work that should not require you.
What the number looks like across different roles
The table below shows illustrative annual costs at different billing rates and admin volumes. The range of four to ten hours per week is realistic for sole practitioners and founder led businesses without dedicated ops support.
| Role | Rate | 4 hrs/week | 7 hrs/week | 10 hrs/week |
|---|---|---|---|---|
| Consultant solicitor | £350/hr | £67,200 | £117,600 | £168,000 |
| Independent consultant | £250/hr | £48,000 | £84,000 | £120,000 |
| Agency founder | £150/hr | £28,800 | £50,400 | £72,000 |
| Founder led team (CEO) | £200/hr | £38,400 | £67,200 | £96,000 |
These are illustrative figures, assuming 48 working weeks per year. The point is not the precision — it is the order of magnitude. Most founders who do this calculation for the first time discover they are spending between £30,000 and £100,000 per year of their own expertise on work that a system could handle.
Why the number is almost always higher than expected
Three factors tend to make the real cost higher than the initial estimate.
Context switching. Admin does not just cost the time it takes. It costs the transition in and out of focused work. A 20-minute task that interrupts a deep work session may cost 45 minutes of productive time in total. This is hard to quantify but real.
Evening and weekend time. Most founders do not count time spent on admin outside working hours in their initial estimate. They often should. If you are invoicing on Sunday evening, that time has a cost — even if it is not billed.
Compounding across the team. If the founder is spending admin time, team members often are too. A team of four where each person spends four hours per week on automatable tasks is a different problem in scale, even if the individual cost per person looks manageable.
The question is not "is this a big number?" The question is: "does fixing it make financial sense?" The 10PM Time Leak Audit answers that question specifically, for your operation, before you spend anything on automation.
When fixing it makes financial sense
The calculation only justifies action if the cost of fixing is lower than the cost of continuing. In practice, automation tends to make clear financial sense when:
The annual cost of the invisible work exceeds £20,000 (at conservative estimates). The tasks are genuinely repetitive — they follow a consistent pattern across clients or time periods. The work is not going away on its own, and the option is not to hire someone to do it instead.
If your invisible work calculation comes to £40,000 per year, and fixing it costs £4,500 (Audit plus Sprint), the payback period is under six weeks. That is an unusually clear return on investment for a business decision.
The 10PM Time Leak Audit exists specifically to do this calculation properly: not as a rough estimate, but as a structured analysis of your actual operation, with a ranked list of what is worth automating in order of impact. If the numbers do not support a Sprint, the Audit will say so.
For context on whether to hire instead of automate: hire vs automate — how to decide.
What is your number?
15 minutes. Tell me how your week works and I will calculate the annual cost of your invisible work and tell you whether fixing it makes financial sense.
Book a free 15 min reviewRelated: What is invisible work? · Hire vs automate · The 10PM Time Leak Audit™