A complex pay package can't be understood one element at a time. A stock award lifts your taxable income, crosses a threshold, and removes an allowance you didn't know you were relying on.

There are people who can describe their employer's research pipeline in fine detail, stage by stage and year by year, and who couldn't tell you what proportion of last year's stock award actually reached them. Or what it did to anything else they own.

That isn't carelessness. The base salary sits on a payslip. The vesting schedule lives in a different system, often administered by a different company altogether. The tax treatment of each element depends on how it was structured and on the month it lands. Answering one simple question, how much of this did I keep and what did it cost me elsewhere, means assembling documents that arrive at different times of year, written by different people, none of whom is looking at the whole.

Tom Redmayne, a Chartered Financial Planner at rockwealth, has a phrase for the result.

“You're a busy, intelligent, successful executive, and you pretty much need a part-time job to work out exactly how you're getting paid and how much you're being taxed.”

Nobody has that job. Payroll doesn't, the accountant doesn't and usually the person being paid doesn't either. So the question worth asking about a complex pay package isn't whether it's difficult. It plainly is. The question is what happens when nobody does the work of seeing it whole.

More people are breaching their pension allowance, not fewer

More people are exceeding their pension annual allowance than were doing so two years ago, and the allowance itself has got bigger.

HMRC's most recent private pension statistics, published in July 2026, show that 30,440 people reported pension contributions above their annual allowance through self assessment in 2024/25, up from 24,950 the year before. The value of those excess contributions rose from £505 million to £672 million. HMRC describes the figures as subject to revision, and the latest year as particularly provisional.

Set that against what had happened to the allowance itself. In April 2023 the standard annual allowance rose from £40,000 to £60,000. More room before a charge applied. And more people running into one.

Why is a harder question than it looks. The published data doesn't say. HMRC records how many people reported an excess, but publishes no split between those on the standard allowance and those whose allowance had been reduced. The figures show that more people are being caught. They don't show what caught them, and anyone who tells you otherwise is guessing.

What the evidence does point to is who is most exposed. Research by the Institute for Fiscal Studies, published in the journal International Tax and Public Finance, looked at how UK taxpayers respond to thresholds in the personal tax system, including the £100,000 line at which the personal allowance starts to disappear. Working from tax return data for 2010/11 and 2013/14, it found that the people who visibly adjust their income to stay the right side of a threshold are overwhelmingly company owner-managers and the self-employed. Those with only employment income barely register.

Employees aren't less alert. They just don't get to decide when their pay arrives or what form it takes.

Payroll is no help here either. It applies the rules to what it can see, which is one job, one person, one year.

One more thing is missing from the official record. HMRC's separate statistics on employee share schemes cover the four tax-advantaged schemes: enterprise management incentives, company share option plans, save as you earn and share incentive plans. Restricted stock units, the form in which a great deal of senior pay now arrives, aren't a category within them at all.

Your pay package doesn't split neatly into parts

Nothing in a complex pay package moves on its own. A decision about one element is always, whether you meant it that way or not, a decision about the others.

In the 2026/27 tax year, adjusted net income above £100,000 strips away the personal allowance at £1 for every £2, until it's gone entirely at £125,140. Across that band the effective marginal rate on income tax is 60 per cent, or nearer 62 per cent once employee National Insurance at two per cent is counted. Those are the England, Wales and Northern Ireland figures. Scotland sets its own rates and bands, so the effective rate there differs, though the withdrawal of the allowance applies across the UK.

The same £100,000 figure decides eligibility for tax-free childcare and, in England, for the funded hours. GOV.UK's eligibility rules apply that test to each parent separately rather than to the household, which is the part that catches people out.

Then there's the pension annual allowance. Where threshold income exceeds £200,000 and adjusted income exceeds £260,000, the £60,000 allowance falls by £1 for every £2 of adjusted income above £260,000, down to a floor of £10,000. HMRC's guidance on the tapered annual allowance is clear that the first test is a gate: below £200,000 of threshold income the taper can't apply at all, however high adjusted income goes.

Beyond that gate the arithmetic is quick. Adjusted income of £300,000 is £40,000 over the line, so the allowance drops by £20,000, to £40,000. Someone who had already paid in £60,000 on the assumption of a full allowance is now £20,000 in excess.

Most of this gets discovered afterwards. Your allowance for a year depends on what the whole year turned out to look like, and an award landing in November can change the answer to a question you settled in April.

Tom advises a married couple, both senior employees at large, research-driven companies, each with a substantial base salary alongside stock options, restricted stock units and other benefits. Establishing how each element was taxed, at what point and how the tax was collected was the first piece of work. Sell-to-cover shows why. Part of an award is sold as it vests to meet the tax, and the balance arrives as stock you now own. The proportion sold varies with the withholding arrangement. Either way, a second decision is hiding inside the first.

“There's the concentration risk if you start building up quite substantial holdings in the firm that you work for, which can be a single point of failure if it all goes pop,” Tom says.

An accountant won't rescue it after the fact. A return records what happened. The decisions that settled the answer were taken months before anyone opened it.

A plan is what absorbs the event you didn't schedule

There's no clever manoeuvre at the end of this. What changes the outcome for someone with a complex pay package is holding it all together before the decisions arrive, rather than reconstructing it once they've gone.

The whole position isn't an abstraction. It's a schedule of what is due to land and when. It's the tax treatment of each element, established in advance. It's both partners read together rather than one at a time, because the thresholds don't care which of you triggered them. And it's a record of what went into pensions over the previous three tax years, which is what makes carry forward usable when a large year arrives: unused allowance from those years can be brought forward, but only if you know what it is.

If employees barely respond to tax thresholds, what is the planning for? A plan doesn't change when an award vests. The employer sets that, and no adviser moves it. What a plan changes is when you find out. Knowing in February what March will do to your adjusted income is a different position from working it out the following January. In February the pension contribution, the decision to sell and the choice of wrapper are all still open. By January they have been made for you, by default.

The couple's plan was built around awards arriving over several years. Then one of the employers was acquired, and every option and every award crystallised at once. One very large event, a heavy tax consequence, adjusted income pushed well past the tapering threshold and carry forward suddenly central rather than theoretical.

Nobody predicted the acquisition. The plan didn't need to.

Redundancy followed. Because the position was already understood, the months that came next could be spent weighing consulting work and interviewing properly, instead of taking whatever came first.

“He doesn't have to rush back into work, because we've got the plan in place and know that they're going to be okay,” Tom says. “It gives him that clarity and peace of mind to make sure he makes the right next step.”

It would be easy to file that under things that happen to other people. But an acquisition and a redundancy are only the loud version. The quiet version is a single award vesting a fortnight before the tax year closes, and a pension contribution made ten months earlier that turns out to have been the wrong size.

Following the money is where a complex pay package starts to make sense

The starting point isn't clever. It's arithmetic: what comes in, where it goes and when.

Asked where someone in this position begins, Tom doesn't reach for anything technical.

“They need to follow the money, quite simply. They need to understand what's coming in, what's going out and to where. How much is going to HMRC? How much is ending up in your pocket?”

That's the base position, and everything else sits on it. It's built from what reaches you, not from what appears on the contract.

Next come the other elements: what they are, when they arrive and how each one is taxed. Two questions matter more than the rest. Is a given element taxed as income or as a capital gain? And is it taxed when you receive it, or when you sell it? Those two answers shape most of what follows, and they aren't the same for every award.

Then the schedule, which is what turns the exercise from historical into useful. Knowing what has already happened is bookkeeping. Knowing that an award is due in a particular month is what lets a question be asked while it can still be answered.

Last, the pension history. Carry forward depends on knowing what went in during each of the previous three tax years. It's the dullest part of the job and it's the part that makes a large year survivable rather than expensive.

“It's all complex, fiddly and everything's interconnected,” Tom says. “You can't look at anything in isolation.”

The haze lifts when the whole picture is in one place

This work doesn't produce better answers to individual questions. Most of those answers are fixed by rules anybody can look up. What it produces is a single position in place of a drawer of separate documents, and a position can be acted on when something unexpected happens to it. That is the work a complex pay package asks for.

“Without clarity on your whole picture, it's very hard to make informed decisions,” Tom says. “If you're going ad hoc, with no proper planning and no understanding of the knock-on effects, you're operating in a haze. Good financial planning makes the complex a bit more simple. The haze lifts, and you can understand what's going on and where you're going.”

If you'd like to talk to Tom Redmayne about how the different parts of your own pay fit together, why not arrange an initial meeting?

Resource

Adam, S., Browne, J., Phillips, D. & Roantree, B. (2021). Frictions and taxpayer responses: Evidence from bunching at personal tax thresholds. International Tax and Public Finance, 28, 612 to 653.