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Evolution Mx RTI
Sold by Integrity Software Systems Ltd and recognised by HMRC for PAYE. RTI filing and submission.
What we know, and what we do not
HMRC’s recognition list gives a supplier name and a product name. Everything below is either taken from that list, derived from the product’s own name, or read from Integrity Software Systems Ltd’s website on 25 September 2026. We have not used the product, and we do not publish scores or star ratings, because we would be making them up.
| Recognised by HMRC | Yes, for PAYE |
|---|---|
| What its name says it does | RTI filing and submission |
| Pricing | No pricing found We read the supplier’s site and found neither a price nor a quote request. Pricing may exist somewhere we did not reach. |
| Supplier site | www.integrity-software.net |
| Last checked | 25 September 2026 |
We do not publish a price for this product. Not because we could not find a figure, but because reading prices off marketing pages automatically proved wrong about half the time: tiers, promotional rates, third-party costs and customer testimonials all look alike to a machine. The methodology gives the examples. Check Integrity Software Systems Ltd’s own page for the price, and treat anyone publishing a confident figure for all 177 products with suspicion.
The company behind it
Integrity Software Systems Ltd trades as INTEGRITY SOFTWARE SYSTEMS LIMITED, company number 03410598, on the Companies House register. It was incorporated 28 July 1997, which makes it 29 years old. Its registered office is in Birmingham.
| Registered name | INTEGRITY SOFTWARE SYSTEMS LIMITED |
|---|---|
| Company number | 03410598 |
| Status | Active |
| Incorporated | 28 July 1997 (29 years) |
| Registered office | Birmingham, B4 6WR |
| Last accounts made up to | 31 July 2025 |
| Next accounts due | 30 April 2027 |
Company data from the Companies House register, read on 26 September 2026. Matched to the supplier by name, conservatively: where we could not be certain which company a supplier is, this section is left off rather than filled in with a guess.
Others of the same kind
RTI filing products from elsewhere on HMRC’s list, with the ones that publish a price first.
| Product | Supplier | Pricing | Their page |
|---|---|---|---|
| RTI Lite | Hartigan Software Design Ltd | No pricing found | Supplier |
| RTI E-FILING Specialist | 12efile | No pricing found | Supplier |
| RTI E-FILING Professional | 12efile | No pricing found | Supplier |
| RTI E-FILING Specialist | eFile Ready Ltd | No pricing found | Supplier |
| RTI Pro | Hartigan Software Design Ltd | No pricing found | Supplier |
| RTI Payroll Standard | Hartigan Software Design Ltd | No pricing found | Supplier |
| REIMS RTI Service | SAA Consultants Ltd | No pricing found | Supplier |
| SumTota E-Filing | SumTotal Systems UK Ltd (now part of Cornerstone) | Quote only | Supplier |
Source: HMRC’s recognised payroll software list, under the Open Government Licence, plus Integrity Software Systems Ltd’s own published pages. We are not accountants and this is not advice about which product suits your business. Inclusion here is never paid for, and outbound links may earn us a commission without changing what we publish: how we make money.