CTM35050 - Income Tax: accounting for tax deducted from interest

Building societies, banks and other deposit takers (including non resident companies trading from a branch or agency in the UK and, in some cases, local authorities) are required to deduct income tax at the savings rate in force for the relevant year of assessment from interest paid or credited to individual depositors.

People who do not expect to have to pay any tax can register to have their interest paid in full without deduction of tax.

Where tax is deducted, dividends paid by building societies on share accounts are treated as interest. The regime for deposit-takers and building societies is laid down in ITA07/CH2/PT15 supplemented by SI1990/2231, as amended, in the case of building societies.

These institutions are obliged to account for the amounts deducted under ITA07/CH15/PT15 using form CT61(Z) (see AC4100).

Entries on these forms giving aggregated figures of interest paid or credited and the tax deducted for the return period are acceptable. Dates of payments need not be specified but separate figures should be shown for pre and post 5 April interest to reflect any change in the savings rate.

You should check the figures in the returns against those in or with the accounts. Institutions should provide a reconciliation of the figures in the CT61(Z) returns with the deductions claimed in the accounts for these items.

If the Accounts Offices have any points of doubt or difficulty arising on the forms CT61(Z), they will refer them to the Inspector dealing with the accounts of the institution concerned.

Building Societies, banks and other deposit takers are audited periodically by CAR Audit to ensure that the scheme for deducting income tax from interest payments is being operated properly. The audits include checks that the correct amount of tax is being returned on forms CT61(Z).