Optional remuneration arrangements can turn a benefit that would normally be exempt from Income Tax into a taxable employment benefit. This is one of the more easily overlooked consequences of salary sacrifice and flexible-benefit packages. The fact that an employer could provide a particular benefit tax-free outside a remuneration arrangement does not mean that the exemption survives when the employee gives up salary or a cash alternative to receive it.
The analysis is therefore not limited to asking whether the benefit has a statutory exemption. The employer must first establish whether the benefit is being provided under an optional remuneration arrangement and, if so, whether that particular exemption is protected from the OpRA rules.
How optional remuneration arrangements change the taxable value
There are broadly two forms of arrangement. Under a Type A arrangement, the employee gives up a right or future right to taxable earnings in return for a benefit. Traditional salary sacrifice falls within this category. Under a Type B arrangement, the employee chooses a benefit instead of a cash allowance or another amount of earnings.
Where the rules apply, the amount normally treated as employment income is the greater of the salary or cash amount forgone and the taxable value of the benefit under the ordinary benefit-in-kind rules. The optional remuneration arrangement valuation rules specifically require that comparison.
This prevents an employee from converting taxable salary into a low-value or exempt benefit merely to obtain an Income Tax or National Insurance advantage.
For example, suppose an employer provides medical insurance costing £500 and the employee gives up £700 of salary to receive it. If the arrangement falls within OpRA, the relevant starting amount is £700 because the salary foregone exceeds the normal benefit value.
An exemption can disappear because of salary sacrifice
The more subtle issue arises where the ordinary benefit would have been exempt. Under the OpRA legislation, many Part 4 employment exemptions are switched off when the benefit is obtained through salary sacrifice or instead of cash.
A workplace gym illustrates the principle. Access provided by an employer under the relevant workplace-facilities conditions may otherwise be exempt. If an employee instead sacrifices £400 of salary specifically to receive that benefit, the exemption can be displaced and the salary foregone can become the taxable amount.
The same analysis can affect benefits that appear innocuous because payroll staff are accustomed to seeing them treated as exempt when provided outside salary sacrifice.
Optional remuneration arrangements where exemptions remain protected
The legislation preserves specified benefits from the general OpRA restriction. These include employer contributions to registered pension schemes, qualifying cycles and cycling safety equipment, certain childcare arrangements and specified retirement-related benefits. Cars with CO2 emissions of no more than 75g/km also remain outside the general OpRA valuation comparison.
The detailed excluded exemptions for optional remuneration arrangements should therefore be considered before concluding that every salary-sacrificed benefit is taxed by reference to salary foregone.
The practical distinction is important for pension salary sacrifice. A genuine employer pension contribution remains capable of retaining its favourable treatment even though the employee’s contractual salary has been reduced.
The contractual change must be effective
Calling an arrangement salary sacrifice does not itself reduce taxable salary. The employee must normally give up the right to earnings before becoming entitled to them. An attempt to sacrifice a bonus after the right to receive it has already arisen does not ordinarily prevent the original earnings charge.
Employment contracts, benefit-election dates and payroll implementation should therefore agree. If the contractual salary remains unchanged while payroll simply redirects part of the amount, the arrangement may fail before the OpRA valuation rules are even considered.
Likewise, employees must understand whether they have permanently varied their remuneration package or merely directed the employer to apply already-earned salary towards a personal cost.
Making good is considered after the relevant amount
Where an employee makes a genuine contribution towards a taxable benefit, the payment may reduce the amount ultimately charged, subject to the relevant statutory timing conditions. Under OpRA, however, the employer first determines the relevant amount by comparing the ordinary value with the salary or cash foregone. The employee contribution is not used to depress one side of that initial comparison artificially.
Employers offering flexible benefits should incorporate this analysis into their payroll and PAYE reporting before calculating taxable benefits. Where remuneration packages contain pension contributions, cars, insurance, childcare or several employee choices, specialist tax advice should consider each benefit independently rather than treating the whole package as one salary-sacrifice arrangement.
Disclaimer: This article is provided for general guidance only and does not constitute personal tax, legal or financial advice. The correct tax treatment depends on the specific facts, applicable legislation and HMRC practice at the relevant time. You should contact us for advice tailored to your circumstances before taking or refraining from any action.
