The hidden cost audit: score your business in an hour

Key takeaways

A hidden cost audit scores five unseen costs of in-house work, each from 0 to 2: focus, rework, delay, fragility and stack. A total of 0 to 3 means in-house is working, 4 to 6 means it is leaking money, and 7 to 10 means the hidden cost is heavy and needs action.

• 5 lines scored 0 to 2: focus, rework, delay, fragility and stack.
• 0 to 3: in-house is working. Leave it alone.
• 4 to 6: leaking. Fix the highest line first.
• 7 to 10: heavy. Price it and compare with outside options.

What is a hidden cost audit?

A hidden cost audit is a short, structured review that finds and prices the costs of in-house work that the accounts do not show. The GBL Hidden Cost Audit uses five lines and a simple 0 to 2 scale, so an owner or operations lead can complete a first pass in about an hour.

• The hidden costs of doing everything in-house
• What are hidden costs in a business?

How do you score each line?

Score each line 0 if the problem is absent, 1 if it is present but contained, and 2 if it is frequent or serious. Use evidence from the last month, not impressions.

• Focus: 0 if senior people spend under 2 hours a week on routine work, 1 for 2 to 5 hours, 2 for more.
• Rework: 0 if corrections are rare, 1 if weekly, 2 if daily or customers notice.
• Delay: 0 if nothing waits over a working day, 1 if some things do, 2 if quotes or replies routinely do.
• Fragility: 0 if every process has cover, 1 if one or two do not, 2 if several depend on one person.
• Stack: 0 if every tool has an owner and a use, 1 if some overlap, 2 if nobody knows what is paid for.

What does the total mean?

The total out of 10 tells you how much attention the in-house model needs. Low scores are a reason to leave things alone. High scores do not automatically mean outsource; they mean the cost of the current way of working is high enough to justify a costed comparison.

• 0 to 3: in-house is working. Re-check in a year.
• 4 to 6: leaking. Fix the highest-scoring line with a process change.
• 7 to 10: heavy. Price each line and compare options.

• In-house vs outsourcing: which model is more cost-effective?

How do you turn the score into pounds?

Turn the score into pounds by pricing each line for a year. For focus and rework, multiply weekly hours by the loaded hourly cost and by 46 working weeks. For delay, multiply slow enquiries by your conversion rate and average job value. For fragility, cost the overtime or lost work during absence. For stack, total unused subscriptions.

As a reference, a full-time employee on the National Living Wage costs about £16.27 per worked hour under 2026/27 GOV.UK rates, and a £45,000 manager about £29.98.

• The true cost of an employee in the UK
• What is your time worth as a business owner?

What should you do with a high score?

With a score of 7 or more, deal with the highest line first. Focus problems are solved by moving routine work to someone cheaper, inside or outside the business. Rework needs a written process and a check. Delay needs capacity or cover. Fragility needs documentation and a second person. Stack needs an owner and a cull.

• How to reduce hidden costs in a business
• Delegate vs outsource: which should you choose?

When is the audit not worth doing?

The audit is not worth doing in a business of one or two people with no growth plans, where the owner is content with the hours. It is also unhelpful straight after a major change, because the numbers will not be stable. Wait a month, then measure.

What does this look like in practice?

A pattern we see when owners score themselves: focus and fragility come out at 2, the rest at 1. That is a 7. The owner already knew they were stretched, but had not connected it to the fact that two processes would stop if one colleague left. The audit turns a feeling into a list.

Across our client work, back-office cost per task has fallen by 42% once processes were documented and run by a managed team.

• See client work
• BPO Solutions for UK businesses

Hidden cost audit checklist

Complete these in order.

• Gather a month of evidence: time, corrections, response times.
• Score the five lines from 0 to 2.
• Total the score and read the band.
• Price each line for a year.
• Pick the highest line and one fix.
• Re-score after 90 days.

• Run a time audit to find what to outsource

Next step

Send us your five scores and a line of context for each. We will sense-check them in a 30-minute call and suggest the first fix.