Outsourcing Internal Audit, When It Makes Sense

The arithmetic

An in-house internal auditor is a full-time salary, plus the cost of them being idle between reviews.

An outsourced arrangement is a defined number of days a year. For a company that needs four focused reviews annually, that is a fraction of a salary.

The break-even sits high. Below it, outsourcing wins on cost alone.

The independence advantage

An employee testing their colleagues has a career to protect.

They will find things. Whether they escalate the uncomfortable ones depends on how they expect that to go, and in a small company everybody knows everybody.

An outside firm has no such calculation. That is worth more than it sounds.

The skills advantage

Internal audit now requires data skills as much as accounting knowledge. Querying a ledger. Testing full populations. Building the checks that find threshold clustering and duplicate payments.

One in-house person rarely has all of it, and is expensive to replace when they leave.

The rule that decides it

Your internal audit provider cannot be your statutory auditor.

Your auditor cannot rely on work they performed themselves and still call the opinion independent. If the same firm does both, the audit is compromised.

Some firms offer the whole package. That convenience costs you the independence you were buying.

Use one firm for the statutory audit and a different one for internal audit work. It is the single most important structural decision here.

What outsourcing does not give you

Continuous presence. An outside team is there for the days you buy. Someone inside notices things in week three that an outsider never sees.

Institutional memory, unless you keep the same provider. Rotating providers annually to save money means paying to relearn your business every year.

And it does not remove your responsibility. The findings arrive. Acting on them is still yours, and unactioned findings are the most common way this spend gets wasted.

The hybrid that usually works best

Someone inside owns the process and tracks findings to closure. Outside specialists run the testing.

That combines internal knowledge with external independence and data skills, and it costs less than either done fully.

What to ask a provider

What specifically will you test, and how? A real answer names processes and data checks.

Do you also audit us? If yes, use someone else for one of the two.

Who tracks findings between visits?

Where we fit

We run co-sourced and outsourced internal audit work. Where we are your statutory auditor, we will tell you to use another firm for internal audit rather than take both.