HMRC online filing
Gateway Solver Desktop submits CIS300 returns and subcontractor verifications. Nearly 10,000 companies and their agents file with it. It has been HMRC-recognised since 2004. VAT Solver Pro is the digital link for Making Tax Digital VAT.
PAYE filing through Gateway Solver was retired for 2025/26.
CIS online filing
HMRC-recognised since 2004. CIS filing from a Windows desktop: CIS300 monthly returns and subcontractor verifications, without logging into the Government Gateway by hand every time. Nearly 10,000 companies and their agents file with it.
Licensed per company. Quote on request.
Making Tax Digital for VAT
The digital link for Making Tax Digital VAT. Submit a return from Excel, PDF, CSV, or XML. List price £25 a month or £300 a year for up to ten companies, confirmed on the invoice.
£25 / month or £300 / year, up to 10 companies.
Filing products for accountants and payroll, and bespoke systems when a package will not do.
We consult HMRC on how their online tax services are delivered. Gateway Solver is licensed annually and kept current.
Evolved Software Studios Ltd (135356C) still files for UK customers from the Isle of Man.
Off-the-shelf software, plus consultancy, design, and support. Selected systems work is on the portfolio.
Healthcare, insurance, warehousing, and aviation. Past engagements, not a current client list.
Hardware Interface
One office view of policies, renewals, quotes and claims, with barcodes and station scans so sales, underwriting and the mail room shared the same queue.
Hardware Interface · Healthcare · Mission Critical
Operators who were not ophthalmologists could capture retinal images; remote specialists diagnosed them; the GP received a care plan. HL7v3 and SNOMED were how that message survived contact with the rest of the NHS.
Hardware Interface · Mobile
Price check, replenishment, goods receipt and on-device label printing on Windows CE 4.0, with a sync that did not assume the warehouse was online.
Mission Critical
Existing flight-performance tool moved onto the new aircraft type, plus a way for the customer to import aerodrome data themselves next time.
Past engagements. Not a list of who we work with today.
City and county councils, the NHS, police IT, and the Ministry of Defence.
International banks, stockbrokers, corporate service providers, payroll companies, and accountants.
Housebuilders, engineering, and plant hire, including CIS filing for the construction industry.
A live Sky quiz-show control panel, and software for small and medium businesses.
Mission-critical work has included a Ministry of Defence fire-control prototype, NHS blood tracking, diabetic retinopathy screening and HL7, a GP referral system, and real-time trading information for stockbrokers.
Logos from company files. Historical relationships, not a current endorsement list.
“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
“The team at Evolved Software are fantastic, not only is their technically ability first class but they’re enthusiastic and genuinely a pleasure to deal with. Our project was managed professionally, we were regularly informed of progress and the software was delivered ahead of schedule!”
Alex Victoras, IT Manager, Paystream
