Faster, easier and cheaper than a traditional accountant.

It couldn't be simpler. Buy a Simplex Accounting Box, drop in your receipts after you've highlighted the totals, send the box back to us and we'll take care of your accounting.

Why Simplex?

or buy a Simplex Accounting Box

  • Step 1

    Order your box

    Getting started with Simplex couldn't be easier. Simply buy your Simplex Accounting Box online for a one-off cost or spread the cost over 3 monthly instalments, and have your accounts completed by our expert accountants free of charge.

    Take a look at our Pricing.

  • Step 2

    Drop your receipts in the box

    Using the provided highlighter, just simply highlight the totals on your receipts and drop them into your box. It's that easy.

    We also offer a handy, simple to use Tax Return service for as little as £95.

  • send

    Step 3

    Post it back to us

    Post back your Simplex Accounting Box and our expert accountants will take care of the rest so you can sit back and relax.

    Ready to take the hassle out of accounting? Buy now.

Benefits of Simplex Accounting

Accountancy & bookkeeping simplified for sole-traders, startups, limited companies and contractors.

Easy to use

Buy the Simplex Accounting Box, gather your receipts, use the provided highlighter to highlight the total and place them in the box to be returned to our accountants. It's that simple.

Completion of your accounts and tax returns

We will complete your annual accounts and submit any necessary tax returns to ensure your business always stays compliant with HMRC.

Save money

Don’t want to pay expensive accountancy fees? Simplex makes tax a lot less taxing, offering you an easy-to-use accountancy service without having to pay accountancy level fees

Why Simplex Accounting?

Accounting is loaded with jargon and tax is a minefield. Simplex makes things simple.


The old and slow way

• Complete book work
• Write Spreadsheets
• Learn Accounting software
• Argue over accounting fees
• Time lost, money wasted & stress
• Deadlines missed
• Fines & HMRC threats

Special Offer

Get a Simplex Accounting Box for just £200 (usually £250), or pay over 4 instalments

Get ready for Making Tax Digital with Simplex

Making Tax Digital is an HMRC initiative designed to make sure the UK tax system is effective, efficient and easier for taxpayers.

Making Tax Digital for VAT makes it mandatory for VAT-registered businesses above the £85k threshold to keep records and submit VAT returns digitally using a service such as Simplex.

Perfect for sole-traders, contractors, startups and limited companies.

Fed up with filling out complicated tax forms? Don’t want to pay expensive accountancy fees? Simplex makes tax a lot less taxing, offering you an easy-to-use accountancy service without having to pay accountancy level fees.

Buy now

Get started today.

Ready to simplify your accounting? Buy your Simplex Accounting Box now.

buy now

Quick and simple.

Suitable for a range of businesses and individuals.

We can take care of your tax.

  • Are you chartered accountants?

    Yes. We are a dynamic and growing organisation whose staff combine a mix of highly-qualified accounting, taxation, and finance personnel. Our staff is governed by the Association of Chartered Accountants (ACCA), Chartered Institute of Taxation (CTA), Financial Service Authority (FSA) and the Chartered Management Institute (CMI). 

  • What are the costs and how do I pay?

    You can buy a Simplex Accounting Box here. Simply check out securely online with your card, paying either in full or over 3 monthly interest-free instalments.

    It costs just £200 a year for a Simplex box (limited time offer).

  • How does it work?

    It's simple to use Simplex Accounting! Take the tour to learn our easy 3-step process.

  • Who can use Simplex by MSH?

    Simplex is great for Contractors, Limited Companies and Sole Traders. Speak to us today for more information...

  • Do you offer a Tax Returns service?

    Yes! For just £99 we'll also handle your tax returns. Learn more.

Follow us for the latest accounting advice and tips...

Get the latest on Twitter from MSH.