HMRC-recognised CIS software since 2004

File the CIS300.
Skip the Government Gateway.

Gateway Solver Desktop imports the return, verifies subcontractors, and sends it to HMRC. The credentials stay on your PC.

Gateway Solver filing panel with CIS300 returns, subcontractors, and submission history

Import the file you already have. Check the subcontractor. Transmit.

  1. 1

    Install once

    The same file installs a new PC and updates an old one.

  2. 2

    Bring the figures

    CSV, Excel, payroll, or the system you already run.

  3. 3

    Send it

    HMRC gets the return. You get the receipt by email.

What the licence includes

  • CIS300 monthly return The return itself, sent to HMRC.
  • Subcontractor verification Check the tax treatment before the payment goes out.
  • CSV and Excel import Use the file you already produced. No retyping into a browser.
  • Automated uploads A payroll bureau or an in-house system can drive it.
  • History and email receipts See what went, and keep the submission receipt.
  • Annual licence Kept current. No hidden fees. Quoted per company.

Who it is for

A contractor filing their own CIS300

Verify subcontractors and send the monthly return without a session in the Government Gateway each time.

A payroll bureau filing for clients

Drive the uploads from the system you already use. Licensed per company, per year.

What filers said

“Thanks again for the great CIS Solver software, it has made such a difference to submitting our returns.”

Tony Feather , Accountant, Leeds City Council

“It’s wonderful! We have saved so much time in completing our tax returns. It is so easy to use — if there are problems they are worded so that you can understand the problem.”

Cathy Oakley , Finance Manager, Staffordshire County Council

Questions

What gets filed?

The CIS300 monthly return, and subcontractor tax-treatment verifications.

Do I still log into the Government Gateway?

Not for each return. Gateway Solver keeps the credentials on the PC that files, and sends the return from there.

What if my figures are already in Excel or a payroll system?

Import a CSV or Excel file, or let payroll or an in-house system drive the upload.

HMRC’s supplier list still shows the earlier name, Insite 123, next to Gateway Solver. The list is on GOV.UK. Install notes and the knowledge base are on the product page.

Put this month’s CIS300 on the desktop.

Download the installer, or email [email protected] for a per-company quote. Phone 0208 191 7797.