Income Tax Self-Assessment Ecosystem Data and Integration - Innovation-Led Proof of Concept

Kim Frater, founder of Bid Trawler
Written by Kim Frater
Former Public Sector Buyer • Founder of Bid Trawler • 40+ years' public sector experience
"I believe public procurement shouldn't be complicated. Every guide I write explains the process in plain English so you can bid with confidence."

3 minute read  •  Updated September 2026

A practical guide to understanding what HMRC really wants and how to build a winning response.

The biggest clue in this tender isn't the technology

When you look at this tender, the first thing that jumps out isn't the buzzwords of data and integration.

It's the focus on simplification and accuracy.

HMRC is not just looking for a tech solution. They want an innovation-led Proof of Concept (PoC) that explores how emerging technologies and ecosystem integrations can simplify and enhance the accuracy of the Income Tax Self-Assessment (ITSA) process.

The contract covers building, testing and evaluating a working technical demonstrator. It's about generating evidence and learning, not delivering a live service.

Don't just think tech. Think transformation.

This isn't about just adding another tech layer.

HMRC's Transformation Roadmap and Strategic Approach to Third Party Software highlight the need for solutions that help customers manage tax affairs more efficiently through existing products and services.

It's about reducing administrative effort and improving visibility of tax obligations.

If I were evaluating bids, I'd be looking for submissions that show a clear understanding of these priorities.

Think about the taxpayer's journey

Remember who this is really for.

The end users are people navigating their tax obligations.

For many, the current process is complex and time-consuming. Your response should demonstrate how your solution will make their lives easier.

HMRC wants to see how your innovation can enhance transaction categorisation and apportionment.

Pay attention to what they say

HMRC is clear about their objectives.

They want to understand to what extent enhanced data and ecosystem integrations can reduce customer effort and improve accuracy.

This isn't just about tech for tech's sake. It's about making tax administration simpler and more effective.

That's what I'd build my submission around.

Evidence always beats promises

One thing I noticed when I worked in the public sector was that everyone promised innovation.

Very few proved it.

If you have evidence of previous successful integrations or innovations, use it.

  • Case studies demonstrating real-world impact
  • Testimonials from previous clients or partners
  • Data showing improved outcomes

Collaboration could be your key

HMRC welcomes bids from suppliers independently or in partnership.

This suggests that they value collaboration and diverse expertise.

If your organisation can partner with banks, payment providers, fintechs or accounting software providers, consider doing so.

Consortia might provide the breadth of expertise HMRC is looking for.

Don't underestimate the role of SMEs

HMRC anticipates participation from SMEs.

This means they value agility and innovation often found in smaller businesses.

If you're an SME, highlight your ability to innovate quickly and adapt to changing needs.

Think about maintaining standards throughout the PoC

Consistency is key.

How will you ensure that the solutions you develop maintain high standards throughout the testing and evaluation phases?

Consider addressing:

  • Continuous testing and feedback loops
  • Mechanisms for capturing lessons learned
  • Plans for iterative improvements

One thing I'd keep reminding myself

Every aspect of your bid should address how the solution will impact real users.

Ask yourself, "Does this truly reduce effort for the taxpayer?"

That's the question HMRC will be asking as they evaluate submissions.

Common mistakes

Avoid submissions that:

  • Focus solely on technology without considering user experience
  • Lack clear evidence of past successful projects
  • Overlook the importance of collaboration and partnerships
  • Assume a one-size-fits-all solution without customisation
  • Ignore the need for iterative testing and improvement
  • Fail to demonstrate understanding of HMRC's strategic goals

My Final Thoughts

HMRC is looking for a partner who can help them test and learn about how technology can transform tax administration.

With a contract value of £291,667 over a short duration, it's clear that this is a high-impact, focused project.

Quality and innovation are at the forefront here.

Your written submission should emphasise how your approach will deliver these outcomes and align with HMRC's strategic goals.

Thanks for reading.

I hope this guide has helped make public procurement feel a little less daunting. If it has, then it's done its job.

Kim
Founder, Bid Trawler

P.S. Got a question?

If you've got a question about anything you've read, or you're stuck on a tender, just send me an email.

Whether it's a quick question or you simply need pointing in the right direction, I'm always happy to help if I can.

kim@bidtrawler.com

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About our "How to Win This Contract" guides

Our guides are written using publicly available procurement information, including contract notices and published tender documents where available. They are designed to help suppliers understand the buyer's likely priorities and think more strategically about their approach. They are not based on any bidder's confidential submission, bespoke bid strategy or non-public procurement information.

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