Now closed for submissions

Help us test the new TaxNav spreadsheet feature for MTD IT

We want to make sure you don't need to change a thing to comply with Making Tax Digital for Income Tax (MTD IT).

TaxNav is developing a new spreadsheet module that lets you keep using your existing spreadsheets and submit your quarterly data without needing to reformat or switch software.

How it works

To make this possible, we're designing a smart tool that can read your spreadsheet, extract the relevant tax data, and automatically build your quarterly MTD IT return.

Two easy ways to help us test

You can take part in this test programme until 14 July 2025, via one of 2 ways:

Use your existing spreadsheet

Send us a copy of your current spreadsheet — there's no need to change the format.

You can anonymise the content (e.g. use "ABC" for text and "123" or "-123" for values). We'll use it to test how our system extracts the necessary data. Just make sure you keep the format the way you use it currently.

Send your spreadsheet

Try our pre-formatted templates

Prefer a fresh start?

Test our ready-made spreadsheets, which are already mapped for MTD IT totals — simply enter your income and expenses. We will make this available during July.

Request our template

Your data stays private and secure

Rest assured, your data will only be used to help us understand spreadsheet formats and improve TaxNav’s functionality. Nothing will be shared, and you can anonymise everything before sending it.  

Also, the data is not stored outside of the TaxNav organisation and resides on our secure UK servers behind robust security measures - just like the data in our application.

Make submissions easier for everyone

By taking part, you’ll help us reduce the admin burden for yourself and thousands of other spreadsheet users. The more formats we can test, the better the experience we can build — without you ever needing to change or map your data, which other applications make you do.

About TaxNav

TaxNav is a secure, browser-based solution that helps you meet your MTD for Income Tax obligations — simply, reliably, and fully online. Whether you’re a sole trader, a property landlord, or both, TaxNav gives you everything you need to stay compliant and in control.

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Ready to get involved?

To find out more about TaxNav visit TaxNav