One is free if you bank in the right place; the other hooks you with a discount that expires. Here is what UK sole traders actually need to know.
The FreeAgent versus QuickBooks decision hinges on a single uncomfortable truth: both products have a pricing trick baked in, and if you are a sole trader who falls for either one, you could end up paying far more than you expected. FreeAgent is effectively free, but only if you already bank with NatWest, RBS or Mettle. QuickBooks is often advertised at half price, but that deal lasts six months at most before the full rate kicks in.
Strip away those conditions, and you are comparing two capable but genuinely different tools. FreeAgent is a respected UK accounting platform with real depth; QuickBooks Self-Employed is a deliberately stripped-down tier designed to nudge you upward. Neither was purpose-built for the MTD for Income Tax quarterly filing that becomes mandatory for sole traders earning over £50,000 from April 2026. That distinction matters more than most comparison pages will admit.
FreeAgent was acquired by NatWest Group in 2018, and the consequences of that deal define who FreeAgent is actually for now. If you hold a NatWest, RBS or Mettle business account, you get FreeAgent either free or at a substantially reduced rate of around £14.50/mo. That is a genuinely strong offer. FreeAgent is a well-built platform with invoicing, time tracking, project management, payroll and a polished Self Assessment module. For a sole trader already banked with NatWest Group, it is hard to argue against.
The moment you bank elsewhere, the calculus collapses. The standard rate of £31/mo works out at £372 per year. For a sole trader with straightforward income and expenses, that is a significant premium for features, such as payroll and project billing, that many will never use. If you have been tempted by FreeAgent reviews and assumed it would be free or cheap, check your bank statement first.
QuickBooks runs heavy promotional campaigns offering 50 to 75 per cent off for the first three to six months. The Self-Employed plan starts at £12/mo at the standard rate, which sounds reasonable, but that tier is deliberately limited. It covers mileage tracking, basic expense categorisation and a rough tax estimate, but the invoicing is minimal, VAT filing is absent and the MTD ITSA integration is not its primary focus. Once you need anything more, the next step is Simple Start at £22/mo, then Essentials at £32/mo.
For a sole trader who starts on the Self-Employed plan and finds themselves upgrading within a year, the real annual cost is closer to £264 to £384. That is a significant jump from the promotional figure that attracted them. This pricing architecture is not accidental; it is a funnel. If you are comparing this matchup because a six-month QuickBooks deal just expired, you are not alone. The best MTD software options for sole traders in 2026 include several alternatives worth evaluating before you commit to the full QuickBooks rate.
| Feature | FreeAgent (no bank deal) | FreeAgent (NatWest/Mettle) | QuickBooks Self-Employed | QuickBooks Simple Start | TapTax Starter |
|---|---|---|---|---|---|
| Monthly cost | £31 | Free to £14.50 | £12 | £22 | £4.99 |
| Annual cost | £372 | £0 to £174 | £144 | £264 | £59.88 |
| Built for | Growing small businesses | Same | Freelancers (US-origin) | Small businesses | UK sole traders, MTD |
| MTD ITSA quarterly filing | Yes | Yes | Partial | Yes | Yes, purpose-built |
| Invoicing | Yes, full | Yes, full | Limited | Yes | No (by design) |
| Bank feeds | Yes | Yes | Yes | Yes | Yes |
| AI expense categorisation | Basic | Basic | Basic | Basic | Yes |
| Receipt scanning | Yes | Yes | Yes | Yes | Yes |
| Time tracking | Yes | Yes | No | No | No |
| Mobile experience | Good | Good | Moderate | Moderate | Mobile-first |
| Free tier available | No | Yes (with bank) | No | No | Yes |
FreeAgent has solid MTD for Income Tax support and has been compliant with HMRC's quarterly reporting requirements. So does QuickBooks, at least from the Simple Start tier upward. Neither is bad at MTD filing; both will let you submit quarterly updates to HMRC.
The difference is emphasis. Both products treat MTD as one module among many inside a broader accounting platform. If you are a sole trader whose main task is keeping accurate digital records and filing quarterly, you are paying for a lot of infrastructure you will not use. The TapTax vs FreeAgent full comparison explores this trade-off in more depth, including how the experience of quarterly filing differs between a dedicated MTD app and a general accounting tool.
Before choosing either, it is also worth using the sole trader tax calculator to understand your likely annual tax bill. That figure can clarify whether the extra cost of a full platform is proportionate to your income.
FreeAgent is a more complete product than QuickBooks Self-Employed by some distance. Time tracking, project-level profitability, payroll for anyone with a part-time employee, and a thorough Self Assessment module all feature. Its UK focus means VAT returns and Self Assessment feel native rather than bolted on. The user interface is clean and sensibly organised for someone who spends meaningful time in the software each week.
If you run a small agency, a design consultancy or any solo business where invoicing multiple clients, tracking time per project and managing light payroll are genuine weekly tasks, FreeAgent earns its cost, especially with the NatWest/Mettle deal. The depth is real and the UK tax knowledge built into the product is genuine.
The Self-Employed tier's mileage tracking is excellent and automatic, which matters if you drive for work and want reliable records without manual logging. The QuickBooks mobile app is widely used and reasonably polished for basic expense capture. For sole traders who are US-based or operate internationally, the wider QuickBooks ecosystem offers more integration options than FreeAgent.
For UK sole traders specifically, though, the Self-Employed tier's limitations mean most of the genuine strengths belong to the Simple Start tier and above, which resets the cost conversation entirely.
Both apps have solid mobile versions, but neither was conceived as a phone-first experience. They are desktop platforms with mobile companions. For the sole trader who does their admin on the go, whether reviewing expenses after a job or photographing a receipt in a car park, this matters. A full accounting dashboard on a phone screen carries friction that a streamlined MTD-focused app does not.
If you are weighing up your business structure as well as your software, the limited company versus sole trader tax comparison is worth reviewing before you commit to any accounting platform, since some tools are better suited to one structure than the other.
FreeAgent is a straightforward yes. The free or heavily discounted access to a full-featured UK accounting platform is genuinely hard to beat. Use it, learn it, and take advantage of the invoicing and Self Assessment features. The only caveat is that if your banking relationship ever changes, revisit the maths.
FreeAgent at its standard rate is justifiable if time tracking and project billing matter to you. At £372/yr you are paying for tools you will use. QuickBooks Simple Start is the alternative if you prefer the QuickBooks ecosystem, but expect to pay £264/yr or more once the promotion expires.
You are above the MTD threshold from April 2026, which means quarterly digital filing is not optional. Neither FreeAgent nor QuickBooks Self-Employed was designed with your workflow in mind. You need clean bank categorisation, receipt capture and reliable quarterly HMRC submissions, not invoicing modules or time tracking. TapTax Starter at £4.99/mo gives you exactly that without the overhead.
Map out the year-two cost before you sign up. If the post-promo rate puts you on Simple Start at £22/mo or higher, you are committing to £264/yr minimum. Check whether the features at that tier are ones you genuinely need, or whether a focused MTD app covers ninety per cent of your actual tasks for a fraction of the price.
FreeAgent is one of the best-built UK accounting tools available. But for a sole trader who just needs clean MTD filing, paying for payroll, time tracking and project management is like buying a van to carry a laptop.
This is a genuinely close comparison when FreeAgent is free, and a less close one when it is not. FreeAgent at £0 via Mettle beats almost every alternative for sole traders who want a capable, UK-native accounting platform. FreeAgent at £31/mo is harder to recommend over more focused tools.
QuickBooks Self-Employed is a useful product for freelancers who need mileage tracking and basic invoicing, but the tier architecture is designed to move you upward, and the promotional pricing means many sole traders underestimate what they will actually pay. For UK-specific MTD ITSA compliance, it was not built with quarterly filing at its centre.
For sole traders whose primary need is MTD-ready digital records, quarterly submissions and bank feed categorisation without paying for features they will never use, TapTax Starter at £4.99/mo exists precisely for this gap.
TapTax connects to your bank, categorises expenses automatically, and submits quarterly updates to HMRC. Free plan, no card required.
