Best Free Accounting Software UK: Honest Reviews for Small Businesses & Sole Traders
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Introduction
Not every small business needs to pay £20–40 a month for accounting software — at least not right away. If you’re just starting out as a sole trader, running a very small business with straightforward finances, or simply want to get your accounts under control before committing to a monthly subscription, there are genuinely capable free options worth knowing about.
The honest caveat: free accounting software almost always comes with limitations. Some don’t support Making Tax Digital for VAT, meaning VAT-registered businesses will need to upgrade. Others cap the number of invoices you can send or restrict bank connections. And a few that are technically free require a business bank account to unlock the software.
This guide explains exactly what each free option offers, where the limits are, and which type of UK business each one is best suited to — so you can make a genuinely informed decision rather than discovering the restrictions after you’ve set everything up.
The Best Free Accounting Software for UK Businesses
1. FreeAgent via Mettle — Best Free Option Overall
FreeAgent is not free on its own — it costs £19/month for sole traders. But if you open a Mettle business account (completely free, no monthly fees), you get full access to FreeAgent at no charge. Permanently. Not a trial.
This is comfortably the best free accounting deal available to UK sole traders and small businesses. You’re getting one of the most respected accounting platforms in the UK — one that handles invoicing, expense tracking, MTD VAT, Self Assessment, payroll, and more — at zero monthly cost.
Mettle is a digital business bank account operated by NatWest Group. It’s free to open, free to run, and is FSCS-protected. The account has no transaction fees for standard UK payments and is a genuinely solid business account in its own right — not just a vehicle for getting FreeAgent free.
What you get with FreeAgent via Mettle:
- Unlimited invoices with payment links (Stripe, GoCardless)
- Automatic bank feeds from your Mettle account
- Expense tracking and receipt capture via mobile app
- VAT returns submitted directly to HMRC (MTD compliant)
- Self Assessment tax return support
- Payroll for up to 10 employees
- Running tax estimate so you always know what you owe HMRC
- MTD for Income Tax Self Assessment support
The small print: FreeAgent is free for as long as you hold your Mettle account. If you close the account, you’ll need to start paying for FreeAgent. You can also access FreeAgent free through NatWest or RBS business accounts — worth checking if you already bank with them.
Pros: Full-featured accounting software at zero cost, MTD compliant, excellent for sole traders and freelancers, Mettle is a quality business account in its own right Cons: Requires opening a Mettle, NatWest, or RBS business account to access for free — not suitable if you want to keep your current bank
Best for: Sole traders and freelancers happy to use Mettle, NatWest, or RBS as their business bank account
2. Sage Sole Trader — Best Free Option for Very Early-Stage Sole Traders
Sage has introduced a free tier on its Sage Sole Trader product, designed specifically for non-VAT registered sole traders who want basic bookkeeping without a monthly fee.
The free tier is limited — it’s designed for someone who is just starting out rather than an established business — but it covers the core basics and is worth knowing about if you’re in the very early stages.
What the free tier includes:
- Basic invoicing
- Expense tracking
- Bank transaction import (manual)
- Income and expense overview
Where the free tier ends:
- No MTD VAT support (you’d need to upgrade to Sage Accounting at £18/month for VAT compliance)
- Limited bank connection functionality
- No payroll
- No Self Assessment filing support
- No automatic bank feeds
The paid Sage Sole Trader plan at £7/month adds more features and is still one of the cheapest paid accounting options in the UK. Sage Accounting from £18/month is needed once you become VAT-registered.
Pros: Free to start, UK brand, easy upgrade path as your business grows Cons: Very limited on the free tier, no MTD VAT, no Self Assessment support, no automatic bank feeds
Best for: Non-VAT registered sole traders who are just starting out and want the basics at no cost
3. Pandle — Best Free UK Bookkeeping Tool
Pandle is a UK-based bookkeeping platform with a genuinely useful free tier. It’s not as comprehensive as FreeAgent or Xero, but for sole traders and small businesses with straightforward finances, the free version handles the day-to-day bookkeeping well.
What the free tier includes:
- Unlimited invoices
- Bank feeds (automatic transaction import)
- Expense tracking
- Basic VAT tracking
- Profit and loss reporting
- Quotes and estimates
Where the free tier ends:
- No MTD VAT filing (direct HMRC submission requires Pandle Pro)
- No payroll
- No receipt capture
Pandle Pro costs £5/month (ex VAT) and adds MTD VAT filing, payroll, receipt management, and priority support. At £5/month it’s one of the most affordable paid tiers in the market if you need to upgrade.
Pros: UK-built, solid free tier, clean interface, very affordable Pro upgrade Cons: No MTD VAT on free tier, less well-known than the major platforms, fewer integrations
Best for: Non-VAT registered sole traders and small businesses wanting UK-focused free bookkeeping with an affordable path to MTD compliance
4. Wave — Best Free Option for Non-VAT Registered Businesses
Wave is a well-established free accounting and invoicing platform that’s used by thousands of UK small businesses. The core product is genuinely free — not a trial, not a freemium with key features locked — and it covers invoicing, expense tracking, and basic accounting without charge.
What Wave includes for free:
- Unlimited invoices with professional templates
- Expense tracking and receipt scanning
- Automatic bank transaction import (via direct bank connection)
- Basic profit and loss reporting
- Multi-currency invoicing
- Recurring invoices and automatic payment reminders
Where Wave falls short for UK users:
- No MTD VAT support — Wave cannot submit VAT returns to HMRC. If you’re VAT-registered, you’ll need separate bridging software or a different platform
- No Self Assessment support
- No payroll included (payroll is a paid add-on)
- Customer support is limited on the free plan
- Wave is a Canadian platform — it works in the UK but isn’t built specifically for UK tax requirements
Pricing:
- Core accounting and invoicing: Free
- Payment processing: Transaction fees apply (approximately 2.9% + per transaction for card payments)
- Payroll: Paid add-on (pricing varies)
Pros: Genuinely free, solid invoicing, clean interface, unlimited invoices Cons: No MTD VAT, no Self Assessment, not UK-built, limited UK-specific tax support
Best for: Non-VAT registered sole traders and freelancers who want free professional invoicing and are comfortable managing their VAT and Self Assessment separately
5. Zoho Books — Best Free Option for Growing Small Businesses
Zoho Books is the accounting arm of the Zoho software suite, and its free plan is one of the more generous in the market. It’s designed for small businesses with relatively modest revenue and offers a broader feature set than most free accounting tools.
What the Zoho Books free plan includes:
- Up to 1,000 invoices per year
- Single user access
- Bank reconciliation
- Expense tracking
- Basic reports (profit and loss, balance sheet)
- Client portal for invoice viewing and payment
- Stripe and PayPal payment integration
Where the free plan ends:
- Limited to one user — not suitable for businesses with a team or bookkeeper
- No MTD VAT filing
- Capped at 1,000 invoices per year
- No payroll
- Paid plans start from £12/month and unlock more features
Pros: Generous free tier, client portal included, connects to the broader Zoho ecosystem, multi-currency support Cons: No MTD VAT on free plan, single user only, invoice cap, not UK-built
Best for: Small businesses and sole traders who need more than basic invoicing and want a free tool with growth potential, and who are not yet VAT-registered
What Free Accounting Software Can and Cannot Do
Before committing to a free option, it’s worth being clear about the key limitations:
MTD VAT: Most free accounting tools do not support Making Tax Digital for VAT — meaning they cannot submit your VAT returns directly to HMRC. If you’re VAT-registered, you either need MTD-compatible software (FreeAgent via Mettle being the strongest free option) or you’ll need bridging software on top of your free tool.
Self Assessment: Only FreeAgent (via Mettle/NatWest/RBS) includes Self Assessment support as a free feature. For most other free tools, you’ll need to manage your Self Assessment separately — either through HMRC’s free online service or via an accountant.
Bank feeds: Most free tools offer some form of bank connection, but the reliability and breadth of connections varies. FreeAgent and Pandle have good UK bank coverage; Wave’s connections can be less consistent.
Payroll: Payroll is not typically included in free accounting software. If you need to pay employees, you’ll likely need to upgrade to a paid plan or use a separate free payroll tool like HMRC’s Basic PAYE Tools.
When to Upgrade from Free to Paid Software
Free accounting software makes sense when you’re starting out or when your finances are genuinely simple. But there are clear signals that it’s time to move to a paid platform:
- You register for VAT — you’ll need MTD-compliant software to submit your returns directly to HMRC
- You take on employees — payroll requirements make a paid platform significantly more worthwhile
- Your invoice volume grows — if you’re hitting free plan limits or spending time working around restrictions
- You want Self Assessment filing — if you want your software to submit your tax return directly to HMRC
- You need reporting depth — as your business grows, basic profit and loss reports may not give you enough visibility
At that point, FreeAgent (£19/month), QuickBooks (from £10/month), Xero (from £16/month), or Sage Accounting (from £18/month) are all worth considering. All offer free trials that let you test the platform before committing.
FAQ
Is there genuinely free accounting software in the UK that supports MTD?
Yes — FreeAgent via a Mettle, NatWest, or RBS business account gives you full MTD-compliant accounting software completely free, including MTD VAT and MTD for Income Tax. This is the strongest free option for UK sole traders who need proper HMRC compliance.
Can I use free accounting software if I’m VAT-registered?
Most free tools don’t support MTD VAT, which means they can’t submit your VAT returns directly to HMRC. FreeAgent (free via Mettle/NatWest/RBS) is the main exception. If you’re VAT-registered and want to use Wave, Pandle free, or Zoho Books free, you’ll need separate bridging software to handle your VAT submissions — which adds cost and complexity.
Is Wave accounting safe to use in the UK?
Wave is a legitimate, established platform used widely by UK small businesses. It processes payments and stores financial data securely. The main limitation isn’t security — it’s the lack of UK-specific tax features, particularly MTD VAT support. For non-VAT registered sole traders with simple finances, it’s a perfectly safe and functional choice.
What happens when I outgrow free accounting software?
Most free platforms have a clear upgrade path to paid plans. Pandle Pro is £5/month. Sage Sole Trader paid is £7/month. Zoho Books paid plans start from around £12/month. If you’re using FreeAgent free via Mettle and decide to switch banks, you’d need to start paying £19/month for FreeAgent directly — or switch to an alternative paid platform.
Conclusion: Which Free Accounting Software Should You Choose?
FreeAgent via Mettle is the clear top pick for UK sole traders and small businesses. You get genuinely comprehensive, MTD-compliant accounting software at zero cost — the only requirement is opening a free Mettle business account. If you’re comfortable doing that, it’s hard to argue against it.
If you want to keep your existing bank account, Pandle’s free tier is the strongest UK-built option and the most affordable to upgrade (£5/month Pro). Wave is a solid choice for non-VAT registered freelancers who want free professional invoicing without any strings attached. Sage Sole Trader’s free tier suits those at the very beginning of self-employment who want the Sage brand with a clear upgrade path.
For most UK sole traders serious about growing their business, free software is a starting point rather than a permanent solution. When you register for VAT, take on employees, or simply want your software to handle more, the paid platforms are well worth the monthly cost — and most offer free trials to help you find the right fit.
Pricing and features correct at time of writing. Plans and capabilities are subject to change — always confirm current details on the provider’s website before purchasing.