Free vs Paid MTD Software: What's the Difference for Sole Traders?
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Reviewed by SoleTraderGuide Editorial TeamMTD Software AnalystLast reviewed 1 March 2025
One of the most common questions we receive from sole traders approaching MTD is: “Do I have to pay for software?” The honest answer is: it depends. This guide explains what free options actually exist, what paid software gives you that free doesn't, and how to decide what's right for your situation.
Is There Genuinely Free MTD Software?
The short answer is: kind of. There is no widely available, full-featured MTD accounting platform that is completely free for all UK sole traders. The market leaders — Xero, QuickBooks, Sage, and FreeAgent — all charge a monthly subscription fee.
However, there are three scenarios where you can access MTD-compliant tools at no cost:
- FreeAgent via NatWest or RBS— the main “free” full-featured option (more on this below)
- HMRC's own tools — free but very limited in scope and functionality
- Bridging software — not free, but cheaper than full accounting software if you want to keep using a spreadsheet
FreeAgent via NatWest or RBS: The Main ‘Free’ Option
The most significant “free” MTD software deal available to UK sole traders is FreeAgent via a NatWest or RBS business bank account. This is a genuine, full-featured product — not a cut-down free tier. NatWest Group acquired FreeAgent in 2018, and as part of their offering they provide all qualifying business account holders with full FreeAgent access at no extra cost.
What you get for free with NatWest/RBS:
- ✓MTD Income Tax quarterly updates (HMRC-recognised)
- ✓End of Period Statement (EOPS) filing
- ✓Self-assessment tax return (SA100) filing
- ✓Invoicing and expense tracking
- ✓Bank feed from your NatWest/RBS account
- ✓Tax timeline dashboard (upcoming deadlines and amounts owed)
- ✓Time and project tracking
If you already bank with NatWest or RBS and have a business current account, you should activate FreeAgent before even considering paid alternatives. It is the best deal available for sole traders in the MTD software market.
If you don't currently bank with NatWest or RBS, it is worth considering whether switching your business banking would make sense purely to access FreeAgent for free. FreeAgent costs £19/month if you pay directly — that's £228/year. Weigh this against any banking costs or incentives associated with switching.
HMRC's Free Tools: What They Offer
HMRC provides a number of free digital tools that sole traders can use for specific tasks. These are not replacements for accounting software, but they can complement a paid subscription — or cover specific needs for very simple businesses.
HMRC Online Services
HMRC's Government Gateway provides free access to your tax account, allows you to view previous submissions, and in some cases allows you to make a final declaration. However, it does not provide bookkeeping, invoicing, or bank feed functionality.
HMRC's MTD-compatible tools list
HMRC publishes a list of approved MTD software. Some smaller providers on this list offer basic free tiers. These are typically more limited than the major paid platforms and may lack bank feeds, invoicing, or mobile apps. They can work for very simple businesses.
What Paid Software Offers That Free Doesn't
Beyond MTD compliance (which free options can technically provide), paid accounting software delivers a range of additional benefits that save time and reduce errors:
Automatic bank feeds
Transactions import daily — no manual data entry. This alone can save 1–3 hours per month for a typical sole trader.
Smart categorisation
The software learns your spending patterns and auto-categorises transactions, making quarterly MTD figures more accurate.
Professional invoicing
Create and send branded invoices, accept online payments, and automate payment reminders — all in one place.
Real-time tax estimates
Know roughly what you owe HMRC throughout the year, not just in January. Prevents cash flow surprises.
Mileage and receipt tracking
Log business expenses on the go via mobile. Automated mileage tracking (QuickBooks) means you never miss a deductible journey.
Accountant collaboration
Paid platforms integrate with accountant portals, making it easier to share data and reduce the time (and cost) of an annual review.
When Free is Enough — and When to Pay
Free may be enough if...
- ✓You bank with NatWest or RBS (use FreeAgent for free)
- ✓Your income is very straightforward — one source, few expenses
- ✓You already have a system that works and just need MTD compliance
- ✓You are comfortable managing your finances manually
Consider paying if...
- →You have multiple income sources (self-employment + property, etc.)
- →You invoice clients and need professional invoicing tools
- →You spend significant time on bookkeeping each month
- →You're not confident your current system is HMRC-compliant
- →You want a real-time view of your tax liability throughout the year
Is Paid MTD Software Worth the Cost?
Let's look at the numbers. The cheapest paid MTD option from a major provider is QuickBooks Self-Employed at £8/month — that's £96/year. The next tier up (Xero Starter, QuickBooks Simple Start, Sage Accounting Start) runs to £14–16/month, or around £168–192/year.
The question is: what does that buy you in time and money?
A rough cost-benefit calculation:
Time saved on bookkeeping:If automated bank feeds save you 2 hours/month, and your effective hourly rate is £20, that's £480/year in time value — exceeding the software cost.
Accountant fee reduction: Many accountants charge £100–£200 less per year when clients use good software, as the data quality is higher and reconciliation takes less time.
Tax accuracy: Better categorisation means fewer missed deductions. Even finding one additional £500 deductible expense per year saves a basic-rate sole trader £100 in tax — paying for the software cost.
Self-assessment filing: FreeAgent includes SA100 filing. Paying an accountant to do this typically costs £100–£300/year. If you use FreeAgent and file yourself, you save this cost entirely.
For most sole traders, paid MTD software pays for itself within the first year.
Our Recommendation: Who Should Use What
If you are a...
NatWest or RBS business account holder
Our pick: FreeAgent (free)
Full-featured MTD software including self-assessment filing at no cost. There is no better deal in the market.
Learn more →If you are a...
Sole trader with simple income, tight budget
Our pick: QuickBooks Self-Employed (£8/month)
The cheapest HMRC-recognised MTD option with a reputable provider. Covers the basics without excess complexity.
Learn more →If you are a...
Freelancer or consultant who invoices clients
Our pick: Xero Starter (£16/month) or FreeAgent (£19/month)
Both handle invoicing and MTD well. Xero has better invoicing tools; FreeAgent includes self-assessment filing and has a simpler interface.
Learn more →If you are a...
Established sole trader who values UK support
Our pick: Sage Accounting Start (£15/month)
UK-based phone support, strong compliance focus, and a product built by a UK company that understands UK tax law.
Learn more →If you are a...
Growing sole trader planning to scale
Our pick: Xero Standard (£33/month)
800+ integrations, excellent mobile app, and a platform that grows with your business. The investment is justified once you reach a certain size.
Learn more →Frequently Asked Questions
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