Which investment company management expenses reduce tax?

In short: Qualifying management expenses reduce an investment company's total profits under CTA 2009 s.1219. Current expenses are deducted first at Step 2; capital costs are excluded. The deduction goes in CT600 box 245 and unused current expenses in box 850. Taxley prepares the return with small-company accounts for £139.

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Key facts (checked on 16 October 2026)

Which investment management expenses can a company deduct?

A company with investment business can deduct qualifying expenses of managing that business from total profits. The expense must belong to the period and be revenue rather than capital. An entry in the accounts is a starting point, but does not by itself prove that a cost qualifies under s.1219.

Potential management costs include recurring investment management, platform and custody fees, professional fees for the investment business, bank charges and relevant staff costs. Check the purpose and nature of each cost. A portfolio purchase price is an investment asset, not a management expense.

The company does not need a trade to obtain this deduction. Its income can include bank interest and investment distributions. Our investment company CT600 guide explains how to file where there is no trade and no letting.

Which costs are capital or otherwise excluded?

Capital expenditure cannot be deducted as management expenses, and an amount deductible elsewhere must not be deducted again. Costs incurred after deciding to acquire or dispose of an investment, such as dealing costs and success fees, are generally capital. Interest, depreciation and investment impairments need their own tax treatment.

The distinction concerns what the cost does. Costs of considering investment choices before the decision may be revenue; costs of implementing a particular acquisition or disposal may be capital. Retain invoices and records of the decision rather than classifying every payment to a portfolio manager in the same way.

For bank interest and loan relationship amounts, establish the net result separately. A Bitcoin impairment on tokens simply held as investments does not become deductible by calling it a running cost.

Why are current management expenses deducted first?

Section 1219(1A) requires the current-period deduction before any other deduction at Step 2 of the Corporation Tax calculation. It reduces total profits rather than creating a trading loss. The current deduction is mandatory, while using management expenses brought forward from an earlier period requires a separate claim.

Work out qualifying current expenses, then deduct them against available total profits. Other deductions follow under their own rules. The special priority for current expenses does not extend to carried-forward expenses under s.1223, so keep current and brought-forward amounts distinct in the computation.

Exempt ABGH dividends do not reduce management expenses under the income adjustment in s.1222. Other income outside the tax charge may require an adjustment. This guide does not settle the separate question of how exempt excess reportable income interacts with that rule; the ETF guide explains when that income can be exempt.

How do boxes 245 and 850 record the deduction?

Box 245 records management expenses deducted from profits, including any eligible brought-forward amount claimed. Box 850 records current-period expenses that cannot be fully deducted. It excludes excess amounts carried forward from previous periods. Keep a separate balance showing amounts brought forward, used, newly arising and carried into the next period.

Box 850 is not an additional deduction from taxable profits. It reports the current excess for future use. If a previous excess remains unused, carry it in the supporting computation and records rather than entering it again as a newly arising box 850 amount.

Taxley's investment route separates the qualifying running costs from excluded costs and calculates the current deduction. Review the brought-forward balance against the previous return before claiming it. The dividends received guide helps distinguish exempt receipts from profits available for the deduction.

What does a two-year management expenses example look like?

Suppose a CIHC has £500 of taxable interest and £2,000 of qualifying management expenses in year one. It deducts £500 and carries forward £1,500. In year two, £5,000 interest less £1,000 current expenses and a £1,500 brought-forward claim leaves £2,500 taxable profits and £625 tax at 25%.

Illustrative assumptions: consecutive 12-month periods ending 31 January 2026 and 31 January 2027; the investment business continues; no other income, gains, deductions, ownership changes or restrictions. All expenses qualify. The company claims the full available brought-forward excess in year two.

The year-two claim must be made within two years after 31 January 2027, so by 31 January 2029. The claim concerns use in year two, rather than a second deduction in year one. The rates guide explains why a CIHC uses 25% despite these low profits.

What must happen to claim carried-forward expenses?

The investment business must continue, and use of the excess in the next accounting period needs a claim under s.1223. The deadline is two years after the end of that next period. A partial claim is possible. Carried-forward deductions can also face restrictions, including rules following an ownership change.

Record the claim and reconcile the remaining balance. Do not assume that showing an excess in box 850 makes every later deduction automatic. Nor can an unused expense be carried back under this management-expenses rule.

For investment disposals, keep capital losses separate from management expenses: our company chargeable gains guide explains their boxes. To prepare the return with FRS 102 Section 1A accounts, check whether Taxley fits your company.

Frequently asked questions

Is box 850 the company's total unused expenses balance?

No. It shows only the excess arising in the current period. Earlier unused amounts belong in the carry-forward records and supporting computation, so they are not reported as new expenses again.

Do I need a claim for this year's qualifying deduction?

The current deduction under s.1219 is mandatory and does not require a claim. A deduction for excess management expenses brought forward uses s.1223 and does require a claim within its time limit.

Can management expenses reduce a chargeable gain?

Yes. Qualifying management expenses are deducted from total profits, which can include net chargeable gains. This does not turn the expenses into capital losses or remove the need for a separate disposal calculation.

Does every payment to an investment platform qualify?

No. Recurring custody or management fees may qualify, while dealing costs linked to buying or selling investments may be capital. Check what each charge covers and keep the supporting records.

General information, not personalised tax or accounting advice.