Self Assessment

For sole traders, partnerships and landlords - work out your trading profit, see your SA103 and SA100 figures, and close each tax year in Kontala.

If your business is not a limited company, its profits are taxed on the person who owns it, through Self Assessment. Kontala works out that profit from the books you already keep, restates it on the basis you use for tax, and gives you the figures to put on your return.

Kontala does not file Self Assessment to HMRC. It prepares the numbers; you or your accountant enter them.

Getting set up

Who Self Assessment is for

Which businesses it applies to, and what Kontala prepares

Self Assessment settings

The answers about your trade that decide how profit is worked out

The cash basis and the accruals basis

Which basis your trading profit is worked out on, and what changes

Your trading profit

The books, quarter by quarter, and how they reach a taxable profit

Your computation and SA103 boxes

From accounting profit to taxable profit, box by box

Adjustments and allowances

The entries that move your taxable profit up or down

Your own return

Your personal position, separate from the business's trade

Closing a tax year

Your accounting date and the tax year

When your accounts and the tax year do not line up

Close a tax year

Clear the checks, close the year, and lock its figures