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Why can a self-employed taxi driver’s first January tax payment look like 150% of the bill?
Some self-employed taxi drivers can calculate the year’s tax correctly and still be surprised by the amount HMRC requests in January. The apparent extra bill is often a payment towards the next tax year.
Payments on account are advance Self Assessment payments. They are usually based on the previous year’s liability and divided into two instalments.
The first is due on 31 January, alongside any balancing payment for the tax year already completed. The second is due on 31 July.
This creates the familiar first-year shock. If a new self-employed driver has a £3,000 Self Assessment bill and no earlier payments on account, HMRC’s example shows £4,500 due that January: the £3,000 bill plus a £1,500 first payment towards the following year. A further £1,500 follows in July.
The driver is not being taxed twice on the same profit. The additional amounts are credits towards the next calculation.
That may offer little comfort if the money has not been reserved. Taxi income arrives daily or weekly, while tax falls due in large instalments months later.
Vehicle repairs make the timing harder. A January payment can coincide with slower post-Christmas demand, insurance renewal or a substantial maintenance bill, leaving the driver to choose among obligations that were all foreseeable but not necessarily funded.
Payments on account are not required in every case. HMRC says they are normally not due where the previous year’s tax owed was below £1,000 or where more than 80% of the liability was collected outside Self Assessment, such as through PAYE.
Where they do apply, each payment is usually half of the previous year’s relevant liability. A later balancing payment becomes due if the final bill exceeds the two advance payments already made.
A driver whose profit falls may therefore be asked to advance too much. Reduced working hours, illness, loss of a contract, higher allowable costs or leaving the trade can all lower the eventual liability.
HMRC allows taxpayers to request a reduction where they reasonably expect to owe less. The claim can be made online or using form SA303 and must include the revised estimate.
Reduction is not free credit. If the eventual liability is higher than the reduced amount, HMRC charges interest on the shortfall. A hopeful guess is not the same as a supportable business forecast.
Drivers should use current figures rather than one poor week. Mileage, platform statements, account work, vehicle rental, insurance, fuel or charging and other allowable expenses can help produce a more credible profit projection.
Filing the tax return early improves visibility. It does not normally bring the payment deadline forward, but it shows the balancing amount and next payment on account while there is still time to prepare.
HMRC also offers a Budget Payment Plan for taxpayers who are up to date. Weekly or monthly Direct Debits are credited towards the next Self Assessment bill, reducing the amount remaining at the deadline.
That plan should not be confused with Time to Pay. A Budget Payment Plan builds credit before a future deadline. Time to Pay is a separate arrangement for somebody who cannot meet a tax liability on time and remains subject to HMRC’s affordability assessment.
The simplest internal approach is to treat part of every fare as unavailable. Moving an estimated tax percentage into a separate account can convert a January shock into a routine cost of operating.
The percentage cannot be identical for every driver. Profit, other income, allowances, National Insurance, student loans and tax already deducted elsewhere can all change the calculation.
Tax relief is not the same as reimbursement either. A £1,000 allowable business cost reduces taxable profit; it does not usually produce £1,000 in cash from HMRC.
Payments on account reward early information and punish optimistic cash management. The driver who knows the January and July amounts can price, save and plan. The driver who looks only at the completed year’s tax bill may discover that half of next year has arrived early.
This article provides general information and does not replace tax advice based on an individual driver’s income, expenses and circumstances.
