MTD Bridging Software vs Full MTD Software: Which Clients Need What

MTD for Income Tax bridging software connects the spreadsheet or ledger a client already uses to HMRC, while full MTD software creates the digital records itself. As of 26 October 2026, bridging suits tidy spreadsheet clients near a threshold, and full software suits anyone with bank feeds, receipts or several income sources.

TL;DR:

HMRC says records software "will usually meet all the requirements", while bridging software only connects to records kept elsewhere.

Mandation steps down from £50,000 (6 April 2026) to £30,000 (6 April 2027) and £20,000 (6 April 2028).

Only one product can make each separate submission to HMRC, so a bridging tool and a ledger cannot split the same quarterly update.

At 50 clients, Xero Ignite costs £900 a month excluding VAT after the six-month promotion (50 x £18).

Treat bridging as a stop gap for clients with tidy spreadsheets, and move everyone else to a ledger.

What is the difference between bridging software and full MTD software?
Which clients still suit bridging software?
Which clients need a full MTD ledger?
How much does each route cost at 50, 150 and 300 clients?
How do the options compare on data and write-back?
How do you keep digital links unbroken?
Why does independent evidence matter when choosing MTD software?
Realistic expectations: bridging is a bridge
Find your next MTD software tool through The AI Ledger
Frequently asked questions

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

Full MTD software creates the digital records, whereas bridging software connects to records held elsewhere. GOV.UK describes two types: software that creates digital records through bank links, scanned receipts or manual entry, and software that connects to existing records in spreadsheets or other accounting tools, "sometimes referred to as bridging software".

The records software "will usually meet all the requirements", including quarterly updates and the tax return. For bridging, GOV.UK says only that some products let you send quarterly updates and some let you submit the tax return. Check each product against both tasks.

The legal duty is the same for both routes. The software must create, store and correct digital records of self-employment and property income and expenses, send quarterly updates, and support the tax return due by 31 January the following year. Quarterly updates are summaries of income and expenses, not tax returns.

Pro Tip: Ask every vendor two questions in writing: does it send quarterly updates, and does it submit the final declaration? A bridging product that does only one forces a second product, and you then need to prove the two work together.

Which clients still suit bridging software?

Bridging suits clients who already keep structured spreadsheets and have no reason to move. Xero's own guide, published 11 June 2026, says bridging may still suit small sole traders well under £50,000, businesses winding down and clients nearing retirement. That is a vendor view, and Xero sells the alternative, so weigh it accordingly.

Zmartly, a UK accountancy firm, says landlords who "already run tidy, structured sheets" are the natural fit. It adds that accepted links include linked cells, CSV or XML import, automated transfer and API transfer, while retyping figures into a summary tab is not allowed.

Good bridging candidates share four traits:

One consistent spreadsheet layout per client, with a column for each category HMRC needs.
Few transactions, so a missed entry is easy to spot.
Income from one or two sources, such as a single property business.
A client who will not need bank feeds, receipt capture or live reporting soon.

The client's next threshold date matters too. A client below £30,000 today may be mandated on 6 April 2028 when the limit falls to £20,000, so a bridging choice made now may need replacing within two tax years. Our guide to what the MTD thresholds mean explains how qualifying income is measured.

Which clients need a full MTD ledger?

Clients with bank feeds, receipts, multiple income sources or growth plans need a full MTD ledger. Xero's guide names clients within MTD scope or likely to be within two years, growing businesses and those with several income streams as the cases for cloud accounting. It also lists what bridging lacks: bank feeds, invoice matching, receipt capture and real-time reporting.

Pandle, an accounting software vendor, goes further. It says bridging "should really be treated as a stop gap", warns that holding data in several places carries a "much higher risk of errors or confusion", and notes it offers no guarantee of meeting future MTD requirements. Again, this is a vendor opinion, but it matches the operational risk any practice recognises.

Full software also removes the spreadsheet as a single point of failure. In the directory, Xero holds an editor score of 4.5 out of 5 and QuickBooks holds 4.3 out of 5, both listed as UK default ledgers. Dext, with an editor score of 4.7 out of 5, captures receipts and invoices into a ledger, which suits clients whose problem is evidence rather than software.

Practices that file for many clients usually want the tax return in the same system. TaxCalc, with an editor score of 4.6 out of 5, is listed as practice software for returns, accounts and MTD filing, priced by client band.

How much does each route cost at 50, 150 and 300 clients?

Published ledger prices make the full-software route easy to cost, while bridging prices vary by vendor and are often quote-based. Xero's UK pricing page lists Ignite at £18 a month after the first six months, Grow at £39, Comprehensive at £55 and Ultimate at £70, all excluding VAT, with MTD for Income Tax included on each. New customers get 90% off for six months, so Ignite is £1.80 a month during the promotion.

If the practice pays for every client on Ignite, the arithmetic is:

Clients	Monthly at promotion (x £1.80)	Monthly after six months (x £18)	Annual after six months
50	£90	£900	£10,800
150	£270	£2,700	£32,400
300	£540	£5,400	£64,800

Most clients pay their own subscription, so treat this as a ceiling for practice-paid models and a benchmark for what you quote clients. Our cost per client comparison works through more tools, and our QuickBooks pricing guide covers the other major ledger.

For TaxCalc, the directory records annual licences by client band, excluding VAT, with Tax Return Production from £187 and Engager from £9. Dext practice plans are billed per client per month with a 10-client minimum. Neither price is a full like-for-like total, so confirm your own band with the vendor.

Pro Tip: Price the switch, not just the subscription. A bridging tool that costs less per client but adds 20 minutes of reconciliation each quarter can cost more than a ledger once staff time is counted.

How do the options compare on data and write-back?

The table below shows what we can state from the vendors' pages and directory records. Where a vendor does not say, we write "not stated".

Option	Editor score	Price shown	Client data hosting	Trains on client data	Reads or writes ledger
Xero	4.5	£18 to £70 a month, excl. VAT	Not stated here	Not stated	Creates records, sends updates
QuickBooks	4.3	Five UK plans, billed monthly	Not stated here	Not stated	Creates records, sends updates
TaxCalc	4.6	From £187 a year (returns), by band	Not stated here	Not stated	Practice filing software
Dext	4.7	Per client per month, 10-client minimum	Not stated here	Not stated	Captures into a ledger
Spreadsheet plus bridging tool	Not scored	Varies by vendor	Client's own file plus the tool	Not stated	Reads the spreadsheet, submits to HMRC

We have not listed hosting or training claims we could not confirm on a vendor page today, and the directory does not currently score a dedicated bridging product. The Xero guide says Xero is HMRC-recognised for both MTD for VAT and MTD for Income Tax, but that is a recognition claim, not a data-handling one.

HMRC's own wording is the safest filter: "All software listed has been through HMRC's recognition process", and HMRC does not recommend any product. Use the HMRC software finder to confirm a specific product, and plan, is listed before you sign a client up. We did not confirm individual bridging products against the finder for this article.

How do you keep digital links unbroken?

Keep every figure flowing from source record to HMRC without manual retyping. Xero's guide frames the requirement as every figure tracing back to original source data "without manual re-keying", and says any copy-paste or manual transfer between workbooks breaks the chain. Zmartly quotes HMRC as ruling out writing a figure out in another cell or in other software.

For a bridging client, a practical routine is:

Fix one master spreadsheet per client and lock the layout.
Record income and expenses only in that file, never in a side summary.
Connect the bridging tool to the file before the first quarter closes.
Send the update, then save the confirmation HMRC returns.
Review the link before each quarter, because Xero notes the risk grows with portfolio size.

Quarterly timing is the pressure point. Xero's guide says updates are due by the 7th of the month after each quarter end, and its site banner refers to 7 November for the current quarter. Check the dates on GOV.UK for each client's accounting period, since standard and calendar update periods differ.

Mixed estates need care. GOV.UK says you can use more than one product, for example one for records and quarterly updates and another for the tax return, provided they work together. It also says you can use only one product for each separate submission, so a landlord cannot send property quarterly updates through two tools.

Why does independent evidence matter when choosing MTD software?

Independent evidence matters because nearly every guide to bridging comes from a vendor with something to sell. Xero argues for cloud ledgers, Pandle calls bridging a stop gap, and each has a commercial reason to say so. Neither view is wrong, but neither is neutral.

The AI Ledger publishes editor scores and a last-verified date on each listing, so you can see how recent the check against the vendor's site was. We state what vendor pages say and label it as the vendor's claim. We do not claim hands-on testing of any product. Browse the full directory and compare candidates side by side on /compare.

Realistic expectations: bridging is a bridge

Bridging works for a tidy client for a year or two, not for a practice's whole MTD book. If a client will cross a lower threshold or add a bank account, plan the move to a ledger now rather than at the quarter deadline.

Expect the first quarter to expose every weak spreadsheet. Budget time for fixing layouts and chasing missing records before you budget for software.

Find your next MTD software tool through The AI Ledger

Start with the tax prep category for filing software, and the data entry and receipts category for capture tools that feed a ledger. Then use the finder to narrow by practice size and budget. Our readiness guide for the £30,000 wave shows how to sort clients before April 2027.

Frequently asked questions

What is bridging software for MTD for Income Tax?

Bridging software connects to records a client already keeps in spreadsheets or other accounting tools and sends the figures to HMRC. GOV.UK says some bridging products can send quarterly updates and some can submit the tax return, so each product must be checked for both tasks before you rely on it.

Is bridging software allowed for MTD for Income Tax?

Yes, if the product has been through HMRC's recognition process and appears in its software finder. GOV.UK describes software that connects to existing records as a valid type. HMRC does not recommend any product, so confirm the exact product and plan are listed before signing a client up.

Can I use more than one MTD software product for the same client?

Yes, but only one product can make each separate submission. GOV.UK says a landlord cannot use two products to send property quarterly updates. You can, however, use one product for records and quarterly updates and another for the tax return, provided the two work together.

When do sole traders and landlords have to start MTD for Income Tax?

It depends on qualifying income. GOV.UK says those over £50,000 for 2024 to 2025 started on 6 April 2026, those over £30,000 for 2025 to 2026 start on 6 April 2027, and those over £20,000 for 2026 to 2027 start on 6 April 2028. Partnerships will follow later, with no date set.

Is bridging software cheaper than a full MTD ledger?

Not reliably. Xero lists plans from £18 a month excluding VAT, with MTD for Income Tax included, and 90% off for six months for new customers. Bridging prices vary by vendor and are often quoted separately, so compare total cost including staff time, not just the subscription.