CHM Software Partner Program

The CHM MTD VAT and ITSA Return Bridging Software is simple to use and perfect for accountants, bookkeepers and large organisations that prepare multiple returns in Excel.

Use internally and submit VAT and ITSA returns on behalf of your clients.
Enable your clients to submit their own VAT and ITSA returns via their own Excel spreadsheet bearing your logo.
Use bridging software in conjunction with Sage 50 rather than having to pay for an expensive upgrade to Sage 50c just to file your VAT returns.
Cheapest option when filing more than 16 VAT returns per year.
Cheapest option when filing more than 16 quarterly ITSA returns per year.


No setup costs, no hidden fees.

Only pay for what you use, after you begin processing live returns.

Just £1.25 + VAT per return submitted payable monthly (subject to a minimum of £10.00) per return type.

It costs nothing to register, download and try out your personalised test spreadsheet.


Simple step-by-step guide to using the CHM system, accessible from our spreadsheet and web site.
VAT Bridging Tool User Guide (opens in a new window)
ITSA Bridging Tool User Guide (opens in a new window)
Fully featured Account Maintenance Page, including: monthly account activity reports and graphs, spreadsheet downloads, invite a client, access to HMRC Portal, client controls.
Upload your company logo and it will be incorporated into the Excel spreadsheet you download.
Allow your clients to submit returns on your account from a spreadsheet branded with your logo.

sample company logo