Every tool on this list is HMRC-recognised, verified for GBP pricing, and assessed specifically for Making Tax Digital compliance. No US tools with "UK" bolted on.
FreeAgent was built in Edinburgh specifically for UK Sole Traders, sole traders, and small businesses. It covers everything: invoicing, bank feeds, expense tracking, VAT returns, Self Assessment, payroll, and project time tracking — all in one app. If you bank with NatWest, RBS, or Ulster Bank, you get full access completely free, forever.
What's great
Honest drawbacks
Best for: NatWest/RBS customers, sole traders who want an all-in-one UK tool
Try Free 30 DaysXero is the market-leading cloud accounting platform for UK small businesses. It excels at bank reconciliation, has 800+ app integrations, and is the platform most UK accountants use — meaning if you ever hire an accountant, they'll almost certainly know Xero. It's more powerful than most sole traders need, but scales well if you grow.
What's great
Honest drawbacks
Best for: Freelancers with accountants, growing businesses, Xero ecosystem users
Try Free 30 DaysGoSimpleTax is a UK-built tool designed for one thing: filing your Self Assessment tax return as simply and cheaply as possible. You enter your income and expenses, it calculates your tax bill in real-time, and you submit directly to HMRC. At £29.99 per tax year, it's by far the best value option — but it's not year-round bookkeeping software.
What's great
Honest drawbacks
Best for: Freelancers who just need Self Assessment — not year-round bookkeeping
Try Free →QuickBooks Self-Employed is designed for sole traders who want the simplest possible setup. It categorises your bank transactions automatically, tracks mileage, and lets you file your Self Assessment directly with HMRC. Less powerful than Xero or FreeAgent, but also simpler and cheaper.
Best for: Sole traders who want dead-simple tax tracking
Try Free 30 Days →Sage is the established name in UK business accounting. The cloud version (Sage Accounting) is more suitable for sole traders than the desktop software. It's reliable, HMRC-recognised, and has strong VAT and payroll features. It's not as intuitive as Xero or as sole-trader-focused as FreeAgent, but if you already know Sage or your accountant uses it, it's solid.
Best for: Existing Sage users, businesses needing strong payroll
Try Free →FreshBooks is excellent for invoicing, time tracking, and client management — and it supports GBP. However, it is not HMRC-recognised for MTD, cannot file VAT returns directly, and has no Self Assessment integration. UK Sole Traders who need MTD compliance must use a separate tool alongside FreshBooks.
Best for: Invoicing and client management — pair with a UK tax tool for MTD
Try Free 30 Days →| Tool | HMRC MTD | Self Assessment | Bank Feeds | Price/mo | Free Trial |
|---|---|---|---|---|---|
| FreeAgent | ✓ | ✓ Built-in | ✓ | Free–£19 | 30 days |
| Xero | ✓ | Via add-on | ✓ | £16–£47 | 30 days |
| GoSimpleTax | ✓ | ✓ Built-in | ✗ | £2.50* | Free preview |
| QuickBooks SE | ✓ | ✓ | ✓ | £10–£35 | 30 days |
| Sage Accounting | ✓ | Via add-on | ✓ | £15–£36 | 30 days |
| FreshBooks | ✗ | ✗ | ✓ | £15–£50 | 30 days |
*GoSimpleTax charges £29.99/year. All prices ex-VAT. Verify current pricing on each tool's website.
FreeAgent is completely free for NatWest, RBS, and Ulster Bank business account holders — and it's an excellent full-featured tool. If you don't bank with those banks, GoSimpleTax at £29.99/year is the cheapest option for Self Assessment specifically. Wave Accounting offers a free plan but doesn't support MTD, so we don't recommend it as a primary tool for UK sole traders who need compliance.
HMRC-recognised software for Making Tax Digital includes Xero, FreeAgent, QuickBooks (all tiers), Sage Accounting, and GoSimpleTax (for Self Assessment). FreshBooks is not currently HMRC-recognised for MTD. HMRC maintains a full list at gov.uk.
Not legally required right now — but it will be once Making Tax Digital for Income Tax becomes mandatory for your income level. Even before then, dedicated software saves significant time at Self Assessment, reduces errors, and makes it easier to claim all allowable expenses. Most sole traders find it pays for itself in time saved.
For most sole traders, FreeAgent is the better choice — especially if you bank with NatWest/RBS (making it free) and need built-in Self Assessment. Xero is better if you work with an accountant who uses it, need 800+ app integrations, or plan to scale. See our full Xero vs FreeAgent comparison.
Every tool on this list was assessed against the same criteria: HMRC recognition status, MTD readiness, Self Assessment support, GBP pricing transparency, and genuine sole trader fit. We tested each tool's onboarding, checked their current pricing, and verified their HMRC recognition status directly.
Tools with affiliate programmes are marked with links using rel="nofollow sponsored". FreshBooks has an excellent affiliate programme but ranks lower because it doesn't support MTD — which is honest and reflects our review policy. Full disclosure here.