Think back over the last three years of your company. In how many of them did you know, with a month to go, roughly what corporation tax was going to cost you? For most directors the honest answer is none. The figure appeared when the accounts were finalised, which is typically eight or nine months after the year end, with the payment deadline close behind it.

That is not a failure of arithmetic. The numbers were always there in the bookkeeping. Nobody was asked to look at them early, so nobody did. The first person to see the total is often the person who has to pay it, and by then it is a statement of fact rather than a piece of information to work with.

The practical cost shows up in the decisions you cannot make while the figure is unknown. You are weighing up a second engineer, a van, a deposit on better premises, or simply whether to take more out of the company this quarter. Every one of those turns on how much cash is genuinely yours and how much is already spoken for.

Without the tax number, owners do one of two things. They hold back more cash than they need, which slows the business down, or they commit and hope the bill is manageable, which is how directors end up borrowing to pay HMRC. Neither is a decision in any useful sense. Both are guesses dressed up as caution or confidence.

So here is the thing we think every established limited company should expect as standard. Your corporation tax position and your dividend headroom should reach you around a month before the money is needed, and ideally the tax planning conversation should happen before the year end closes at all.

There is nothing clever about this. It is a matter of keeping the bookkeeping current, running the computation on the figures as they stand, and telling the director what the answer looks like. The work is the same work. It is simply done in a different order, with the owner informed first rather than last. Early sight of the number is the whole idea, and most of what follows in this article is about why it so rarely happens.

The reason it rarely happens is structural. A great deal of accountancy is organised around deadlines set by HMRC and Companies House. The accounts are prepared because they are due. The CT600 is filed because it is due. The confirmation statement goes in on its date. Measured against those obligations, the firm has done its job.

What is missing is anyone speaking first. Nobody picks up the phone in month ten of the financial year to say that profits are running higher than last year and the bill will be larger, so here is what the dividend position looks like now. The compliance calendar does not require that conversation, so in most practices it never gets scheduled.

Timing is what makes the late number so frustrating. Almost every lever worth pulling on corporation tax has to be pulled inside the accounting period. Capital purchases, pension contributions, the split between salary and dividends, the timing of invoices and of costs: all of those only count while the year is still open.

When the figure lands after the year end, those options have expired. The conversation becomes administrative. You are told what happened and asked to pay for it. An accountant can still make sure the computation is right and every allowance has been claimed, and that matters, but it is a different exercise from shaping the result. Nothing can be changed after the last day of the year, which is exactly why the thinking has to happen before it.

Take a familiar shape of business. A consultant or contractor, procurement or IT or engineering, running through a limited company, billing well into six figures a year on a small number of high value invoices. Costs are modest. There is a small salary, and the rest of the income comes out as dividends when the bank balance looks comfortable.

On paper this is a straightforward company. Few transactions, clean records, no complicated group structure. That apparent simplicity is precisely what lulls people. A business like this can accumulate a substantial corporation tax liability without anyone ever sitting down to look at it, because nothing about the month to month running of it feels difficult.

What tends to go wrong is the order of operations. The dividends get drawn through the year because the cash is sitting there, and the question about the tax comes afterwards. By the time anyone works out the right split between salary and dividends, or whether the company could afford what was taken, the money has already left.

There are two bills behind that, not one. Corporation tax on the company profits, and personal tax on the dividends drawn by the director, and the second is easy to underestimate when the drawings were taken in instalments rather than as a single decision. Owners are rarely being reckless here. They are working from the bank balance, which is the only number anyone gave them.

It would be easy to blame the owner for not asking. Usually he did ask. The question went into a general inbox at a larger firm, landed with a junior account manager, and sat there for a week while it was passed around for a second opinion.

A week is a long time when a decision is live. The dividend gets taken, the invoice gets raised, the purchase gets made, because business does not pause for a reply. When the answer finally comes it describes something that has already happened. We are blunt about this because it is the industry’s quiet failing: advice that arrives after the decision is not advice, it is a record. The speed of the reply is part of the service, not a courtesy on top of it.

Add up what that pattern costs over a few years and the tax itself is the smaller part. A van deferred for six months. A hire postponed until after the bill, by which point the candidate has taken another role. A price increase left unmade because nobody was confident about the margin. Cash held back in the company for safety, earning nothing, because the owner had no reliable sense of what was already committed.

None of that appears on any statement from HMRC. It shows up as a business that grew more slowly than it could have done, run by someone who spent the year managing uncertainty rather than making decisions. That is the genuine price of a figure that turns up late.

The fix has a sequence. When a client joins us, the first thing we do is review the set-up: the structure of the company, how it is trading, and whether anything about it is working against the owner. Then we look at the VAT scheme, because a consultant with almost no input VAT and a contractor with heavy materials costs should not be on the same scheme by default.

After that comes the salary and dividend position, planned for the year rather than reacted to each quarter. With the bookkeeping on a routine, the corporation tax and dividend forecast can then go out before the year end. The order matters, because each step changes the numbers used in the next one.

For the consultant in the example, the change is not dramatic to look at. He knows his corporation tax figure and his dividend headroom roughly a month out. The money is set aside before it is needed. When he is weighing up a hire or a piece of equipment, he is working from a number rather than a feeling about the bank balance.

The other half of it is the reply. He emails the question and hears back from me, usually within a day, while the decision is still open. Nexus takes three new clients a month so that stays true. Between the forecast and the response time, the tax position stops being an event he braces for and becomes one more thing he manages.

None of this makes the tax smaller by itself, though a correct VAT scheme and a sensible salary and dividend split often do. What it changes is the character of the bill. A figure you have known about for a month, with the cash already allocated, is an administrative task. The same figure arriving with a week to go is a problem that pulls the owner away from running the business.

If you take one thing from this, make it a question for whoever does your accounts: when in the year will I know what my corporation tax bill is, and who will tell me. The answer tells you a good deal about how the relationship is built.