Income Tax MTD Bridging Software Explained

Key facts

Bridging software connects your existing records (Excel, Sage, QuickBooks, etc.) to HMRC’s MTD API — it does not replace your accounting system.
It is fully HMRC-recognised and compliant for quarterly updates and Final Declarations under MTD for Income Tax.
Bridging typically costs £5–£10 per month, compared to £20–£40+ per month for full accounting software.
You do not need full accounting software to comply with MTD — HMRC confirms that bridging software meets the digital link requirement.
From April 2026, self-employed individuals and landlords earning over £50,000 must file quarterly updates using MTD-compatible software.

What Is Bridging Software?

Bridging software is an MTD-compatible tool that acts as a digital link between your existing accounting records and HMRC. Instead of replacing your bookkeeping system, it simply transmits your income and expense figures to HMRC through the official Making Tax Digital API.^[1]

Think of it as a translator: you keep your records exactly as they are — in Excel, Google Sheets, Sage, QuickBooks, FreshBooks, or any other system — and bridging software handles the quarterly submission to HMRC on your behalf.

Key point: HMRC does not require you to use full accounting software for MTD. Bridging software is a fully compliant alternative that meets the digital link requirement.^[2]

How Income Tax Bridging Works

The bridging process is straightforward:

Prepare your figures — calculate your quarterly income and expenses in your existing software or spreadsheet, exactly as you always have.
Import into bridging software — enter your totals into the bridging tool via CSV import or manual entry. There is no need to transfer individual transactions.
Submit to HMRC — the bridging software sends your figures to HMRC through the official MTD API. You receive confirmation in seconds.

The entire process typically takes under five minutes per quarterly update.

Who Should Use Bridging Software?

Bridging software is the right choice if any of the following apply:

You use spreadsheets — Excel, Google Sheets, or Apple Numbers for tracking income and expenses
You use legacy accounting software — Sage 50, QuickBooks Desktop, FreshBooks, or older packages that don’t have built-in MTD Income Tax filing
You don’t want to switch software — your current system works and you see no reason to pay for a complete accounting platform just to comply with MTD
You’re an accountant or bookkeeper — you manage multiple clients on different systems and need a cost-effective way to file for all of them
You’re cost-conscious — bridging from £5/month is significantly cheaper than full accounting software at £20–£40+/month

Bridging vs Full Accounting Software

This is the most important distinction to understand before choosing MTD software:

	Bridging Software	Full Accounting Software
What it does	Submits your figures to HMRC	Full bookkeeping, invoicing, payroll + HMRC submission
Typical cost	£5–£10/month	£20–£40+/month (£240–£480+/year)
Keep existing records?	Yes — no migration needed	No — must import/migrate data
Works with spreadsheets?	Yes — Excel, Sheets, CSV	Typically not
Learning curve	Minutes	Hours to days
HMRC compliant?	Yes — same MTD API	Yes — same MTD API

The simple rule: If you already have a way of tracking income and expenses that works for you, bridging software is the cheaper, simpler way to comply with MTD. You only need full accounting software if you want its additional bookkeeping features.

What You Can File Through Bridging Software

Bridging software supports all the same submission types as full accounting software:^[3]

Quarterly updates — income and expense summaries filed four times per year
Final Declaration — the year-end submission that replaces the old Self Assessment tax return
All income types — self-employment, property, dividends, interest, pensions, capital gains, and foreign income

There is no difference in what HMRC receives — the data submitted through bridging software is identical to data submitted through full accounting platforms.

Compatible Software

Bridging software like GoFile works alongside virtually any record-keeping system:

Spreadsheets: Microsoft Excel, Google Sheets, Apple Numbers, LibreOffice Calc
Desktop accounting: Sage 50, Sage 200, QuickBooks Desktop, MYOB
Cloud accounting: FreshBooks, Xero, Wave, Kashflow (export and submit via bridging)
Manual records: paper records can be entered manually into the bridging tool

Digital Links and Compliance

HMRC’s MTD rules require a “digital link” between your records and the submission to HMRC. This means data cannot be manually re-keyed from one system to another — it must flow digitally.^[1]

Bridging software satisfies this requirement. When you import a CSV from your spreadsheet or enter figures that match your accounting software, the bridging tool creates the required digital link and transmits the data to HMRC via the MTD API.

For more detail on digital link requirements, see our article on Digital Links & Digital Records.

Cost Comparison

The cost difference between bridging and full accounting software is substantial:

Option	Annual Cost	5-Year Cost
GoFile (bridging)	£49.99	£249.95
Xero (Starter)	£180	£900
QuickBooks (Simple Start)	£144	£720
FreeAgent	£174	£870

For accountants filing for multiple clients, the savings multiply. GoFile’s agent pricing starts at £4.99 per client per month — with volume discounts that reduce per-client costs significantly as you grow, compared to thousands for per-client accounting software licences.

Getting Started with Income Tax Bridging

Setting up bridging software takes minutes:

Sign up — create a free account at secure.gofile.co.uk
Authorise with HMRC — grant permission for MTD Income Tax submissions (one-time step)
Prepare your figures — calculate your quarterly income and expenses in your existing system
Submit — import your totals and file your quarterly update to HMRC

Don’t wait until the deadline. Set up your bridging software now and test the HMRC connection. The first quarterly update for Phase 1 taxpayers is due 7 August 2026. For the full calendar, see MTD Key Dates.

Frequently Asked Questions

What is Income Tax MTD bridging software?

Bridging software is a tool that connects your existing accounting records — whether spreadsheets, Sage, QuickBooks, or other systems — to HMRC, allowing you to file quarterly Income Tax updates under Making Tax Digital without switching to new accounting software.

Is bridging software fully compliant with HMRC for Income Tax?

Yes. HMRC recognises bridging software as a fully compliant way to meet MTD for Income Tax requirements. It connects to HMRC through the official MTD API, the same interface used by full accounting platforms like Xero and QuickBooks Online.

What is the difference between bridging software and full accounting software?

Full accounting software (Xero, QuickBooks, FreeAgent) provides complete bookkeeping, invoicing, and MTD filing, typically costing £20–£40+ per month. Bridging software only handles the HMRC submission, letting you keep your existing records. It is simpler and much cheaper, starting from around £5 per month.

Can I use Excel with bridging software for Income Tax?

Yes. You can keep your Income Tax records in Excel, Google Sheets, Apple Numbers, or any spreadsheet. Bridging software like GoFile accepts CSV imports or manual entry of your income and expense totals for submission to HMRC.

Do I need to switch from Sage or QuickBooks to comply with MTD?

No. If your version of Sage or QuickBooks does not support MTD for Income Tax directly, bridging software like GoFile creates the required digital link. You continue using your existing software and submit through GoFile.

How much does Income Tax bridging software cost?

GoFile charges just £4.95 +VAT per month for self-employment and property income. Dividends, interest, pensions, and capital gains are free. Accountants can file from £4.99 per client per month with volume discounts.

Sources

Making Tax Digital for Income Tax Self Assessment — GOV.UK
Find software that’s compatible with Making Tax Digital for Income Tax — GOV.UK
Using Making Tax Digital for Income Tax — GOV.UK