For smaller businesses, monthly accounting fees can start from under £50. On average, the monthly cost varies based on business size: sole traders can expect to pay between £100 and £150, start-up businesses typically incur fees of £300 to £400 (plus VAT), and established businesses may face costs ranging from £500 to £1,000 (plus VAT).
For tax returns and self-assessments an accountant will charge a one-off fee, which will typically range from £150 to £300, depending on the complexity and scope of your finances.