CT600 tax return filing in Lanark

CT600 filing for Lanark limited companies

The CT600 is the company tax return form. It is filed online and has to be accompanied by the full statutory accounts and a tax computation in iXBRL format. Filing the CT600 with HMRC is a separate duty from filing accounts at Companies House, even though most companies deal with both in the same week.

CT600 filing service for Lanark businesses: local facts

Lanark is in the South Lanarkshire council area, in Scotland. ONS figures for 2026 count 9,380 VAT- or PAYE-registered businesses in South Lanarkshire, and 8,295 of them (88%) employ fewer than ten people. Many are small enough to use the micro-entity regime.

The largest groups of micro businesses in South Lanarkshire are construction (1,485), wholesale and retail (1,270) and professional, scientific and technical services (1,100). For construction companies in Lanark, Construction Industry Scheme deductions, retentions and stage payments can distort profit, so we reconcile your CIS statements before the accounts are prepared. That puts construction at 18% of the local micro-business base.

South Lanarkshire ranks 375 of the 1105 areas we serve by number of micro businesses, and its micro share of 88% is in line with the 89% average across them. In wholesale and retail (1,270 micro businesses in South Lanarkshire), closing stock and the VAT treatment of different product lines are the usual pressure points, so we value stock carefully and check your VAT records. In professional, scientific and technical services (1,100 micro businesses in South Lanarkshire), fee income, work in progress at the year end and how directors are paid are the key decisions, so we plan these with you before the accounts are finalised.

Scottish companies are registered with Companies House in the same way as English ones and the filing deadlines are identical. Scottish income tax bands apply to salary, but dividends and Corporation Tax follow UK rules.