Comparison guide · 2026
Quick answer
The best online accountant for a UK limited company is one that is professionally regulated, publishes a fixed fee for a clearly defined scope, and handles accounts, Corporation Tax, Companies House and the director's tax return together. LimitedCompany.Accountants (Accotax London Limited, ICAEW-regulated) offers this online UK-wide, with monthly packages from £45.83 + VAT a month.
Updated 29 October 2026. We include ourselves in this guide, so we have kept to general criteria and our own published prices, and make no claims about other firms.
Anyone in the UK can call themselves an accountant. Choose a firm regulated by a professional body such as ICAEW, ACCA or AAT, so it must hold professional indemnity insurance, follow anti-money-laundering rules and answer to a complaints process. Check the firm on the body's public register rather than relying on a logo.
A low headline price can exclude the confirmation statement, the director's Self Assessment, VAT returns or payroll. Ask for the full list of what is included and the price of anything outside it, in writing, before you sign.
A limited company has separate deadlines for Companies House accounts, Corporation Tax payment, the CT600, the confirmation statement and, for directors, Self Assessment. One firm handling them together reduces the risk of a missed date.
Online should not mean anonymous. Ask who prepares your accounts, who reviews them, and how quickly emails and calls are answered.
Most online firms work in cloud software such as Xero, QuickBooks or FreeAgent. Confirm which they support, who pays for the subscription, and whether bank feeds and receipt capture are set up for you.
Our own published fixed fees, so you have a concrete reference point when comparing quotes:
We do not publish other firms' prices or market averages we cannot verify. Fixed fees in this market are usually set by turnover, transaction volume, VAT registration and payroll size, so compare quotes on the same scope, line by line. All our fees exclude VAT.
It can be, if the firm is regulated, gives you a named contact and covers the full compliance calendar. Many online firms, including ours, also offer meetings by appointment.
At minimum, the statutory accounts, the Corporation Tax return (CT600) and reminders for every deadline. Many packages also include the confirmation statement and the director's Self Assessment; check before you sign.
Search the firm or individual on the ICAEW, ACCA or AAT public registers. Our firm is listed on the ICAEW register as Accotax London Ltd.
With us, basic tax questions by email are free. Technical advice, such as computations, disclosures or written planning, is paid and booked through accotax.co.uk/ws, with the fee agreed first.
Two ways to work with us
Everything is fixed price and agreed before we start. Prices are the same whether you are in London, Morden, Croydon or anywhere else in the UK.
All-inclusive packages
One fee covering your company’s filing calendar, with the price based on your turnover band.
One-off online filing
No monthly commitment. Add what you need to one basket and pay by card, with government fees shown separately at cost.
Not sure which fits? Book a free consultation or get an instant quote.
Talk to an accountant
Share your next deadline, accounting problem or growth question. We will reply with a clear next step and quote any technical work before it begins.
Chat with ACCOTAX on WhatsAppPick a time that suits you and a qualified accountant will call you about your company, deadlines and fees.
Appointments run Monday to Friday, 9:00am to 5:30pm. Your confirmation is emailed straight away.
Four London offices
Work with us entirely online, or sit down with your accountant at whichever office suits you. Open Monday to Friday, 9:00am to 5:30pm. Office visits are by appointment only, so please book before coming in.
Free, no obligation
Pick a time that suits you and a qualified accountant will call you about your company, deadlines and fees.
Appointments run monday to friday, 9:00am to 5:30pm. Your confirmation is emailed straight away.
