The tax provision is often the most technically opaque number in a set of accounts — and the one the board understands least. Directors carry personal responsibility for the accounts they sign, yet many boards are shown only the final tax figure, with no visibility of the judgements behind it. This guide sets out what a board should actually see in the tax provision, so directors can discharge their responsibility knowingly rather than by signature alone.
Why the board needs more than the number
Directors are responsible for the accounts, including the tax charge. That responsibility is real: it is their signature on the financial statements, and increasingly it is their judgement that investors, lenders and HMRC scrutinise. Yet the tax provision is precisely the number most likely to be presented as a single figure with no explanation — because it is technical, and because whoever prepared it may assume the board doesn't want the detail.
That assumption is backwards. The board doesn't need the mechanics; it needs the judgements and the risks — the handful of things that could move the number or that a director would be embarrassed not to know if an investor asked. Giving the board that is part of a functioning tax governance framework, and it is increasingly what investors and lenders expect to see evidence of.
What a board should actually see
A well-presented provision gives the board five things, in plain terms:
1. The effective tax rate, and why it differs from 25%. The headline UK rate is 25%; the effective rate rarely is. The board should see the actual rate and the one-line reason for the gap — loss utilisation, disallowable costs, overseas rates. If a director can't explain why the group's effective rate is what it is, they're exposed.
2. The material judgements taken. Chiefly deferred tax: whether an asset on losses was recognised and on what basis. These are the calls the auditor scrutinises and the ones most likely to be questioned later.
3. The key tax risks and how they're provided for. Uncertain positions, open enquiries, areas of genuine doubt — and what has been provided against them.
4. Any uncertainty that could move the number. Where the provision depends on a judgement that could reasonably go another way, the board should know the range, not just the point estimate.
5. How it compares to prior year and to expectation. A movement in the effective rate or the deferred tax balance that isn't understood is exactly the kind of thing that surfaces awkwardly in a board meeting or a due diligence process.
📌 What a board should actually be shown
Rather than a single tax figure, a well-briefed board sees a short summary like this:
"Total tax charge £547,500 on £2.4m profit — an effective rate of 22.8%, below the 25% headline. The gap is driven by using £250,000 of prior-year losses we hadn't previously recognised, which permanently benefits the charge this year. The one material judgement is deferred tax: we recognised assets only where recovery is probable, consistent with last year. No open enquiries. The one uncertainty that could move the number is the treatment of the £180,000 legal provision, currently provided in full."
In four sentences the board has the rate, the reason, the judgement, and the uncertainty — enough for a director to sign knowingly, and to answer an investor without turning to the finance team.
The questions a director should be able to answer
A simple test of whether the board has been given enough: could each director answer these without turning to the finance team?
- Why is our effective tax rate different from 25% this year?
- Have we recognised a deferred tax asset on losses, and are we confident it's supportable?
- What are our main tax risks, and are they provided for?
- Is there anything in the tax position that would surprise an investor doing due diligence?
If the answer to any of these is "I'd have to check," the board hasn't been given what it needs — and that gap becomes visible at exactly the wrong moment, when an investor or lender asks. The same questions come up in tax due diligence, so a board that can answer them cleanly is also a business that presents well when it matters.
What it costs when the board isn't shown this
A board given only the final tax number is exposed in ways that surface at the worst moment:
- Directors sign what they can't explain. If an investor, lender or regulator asks why the effective rate is what it is and no director can answer, the credibility cost lands on the board personally.
- The gap shows in due diligence. The same questions come up in tax due diligence. A board that hasn't been briefed presents as a business that doesn't control its tax position — and an uncontrolled tax position is priced as a risk.
- Surprises in the boardroom. An effective rate movement or a deferred tax write-down that the board first hears about when the auditor raises it undermines trust in the whole finance function.
None of this requires the board to understand the mechanics — only to be given the judgements and risks in plain terms. That translation is the deliverable.
Who prepares board-ready tax reporting
Board-ready tax reporting — the provision translated into judgements and risks a director can understand and stand behind — is not something general-practice compliance produces as standard. It is what an in-house Head of Tax does, and what an Outsourced Head of Tax provides to a group without one: the provision prepared properly, and then presented to the board in the terms the board actually needs, on a retained basis without the cost of a full-time hire.
Frequently asked questions
What should the board see in the tax provision?
The effective tax rate and why it differs from 25%, the material judgements (particularly deferred tax), the key tax risks and how they're provided for, any uncertainty that could move the number, and the comparison to prior year and expectation.
What are the risks of a board not seeing the tax provision detail?
Directors may sign off a figure they cannot explain, the gap shows up in due diligence as a business that does not control its tax position, and effective-rate movements or write-downs surface as boardroom surprises that undermine trust in the finance function.
Are directors personally responsible for the tax provision?
Directors are responsible for the accounts they sign, which include the tax charge. That's why board-level visibility of the judgements behind the provision matters — signing off a number you can't explain is a real exposure.
Why is the effective tax rate different from the headline rate?
Common reasons include utilisation of previously unrecognised losses, disallowable expenditure, overseas profits taxed at different rates, and prior-year adjustments. The board should be given the specific reason for its own group each year.
How does board tax reporting connect to due diligence?
The questions a board should be able to answer about the provision are the same ones investors ask in due diligence. A board that's properly briefed is also a business that presents cleanly when it seeks investment.
Who prepares board-ready tax reporting for a group without a tax team?
An Outsourced Head of Tax can prepare the provision and present it to the board in the terms directors need, on a retained basis — giving board-level tax reporting without a full-time hire.