Why This Is The Conditional-Free Decision, Not A Feature Comparison
Most comparisons between FreeAgent and Sage treat them as two general accounting platforms competing on features. They are, but in 2026 the more useful framing is that they are the only two established UK MTD for Income Tax providers with a genuine permanent free tier. Every other major-player free offer is either a time-limited trial that converts to paid (QuickBooks, Xero) or a free banking-bundled product on terms only one of these two providers actually offers. The question is which conditional-free tier you qualify for, and whether the conditions match how you actually run your business.
FreeAgent's free tier is unlocked by a business current account with NatWest, Royal Bank of Scotland, Ulster Bank, or Mettle (NatWest Group's digital-only business bank), per freeagent.com's pricing page in May 2026. The free version is identical to the paid version: MTD for Income Tax quarterly updates and Final Declaration filing, MTD for VAT, Self Assessment, unlimited invoicing, bank feeds, and the FreeAgent for Landlords product with native per-property reporting and flexible joint-ownership splits.
Sage Sole Trader Free, rebranded from Sage Individual during 2025 per sage.com's product page in May 2026, is free for any non-VAT sole trader. The free tier has explicit operational caps of 5 sales invoices a month and 25 AI-categorised transactions a month, per Startups.co.uk's March 2026 Sage review. It supports MTD for Income Tax for sole-trader income only, generates a completed SA103 Self Assessment form, and offers basic bank feed connectivity. There is no banking condition.
That difference matters because the choice is not abstract product preference. It is whether your existing banking arrangement (or willingness to switch to Mettle, which is free) unlocks the more capable free tier, or whether your invoice volume is low enough that Sage's bank-agnostic caps work for you. This article is structured around that decision.
What Problems Does FreeAgent Solve For MTD?
FreeAgent, launched in Edinburgh in 2007 and acquired by NatWest Group in 2018 per goforma.com's April 2026 FreeAgent profile, is HMRC-recognised for MTD for Income Tax and MTD for VAT (per FreeAgent's pricing page FAQ, May 2026). It serves freelancers, contractors, sole traders, unincorporated landlords, and small limited companies. Here is what it solves for the free-route decision.
The "I want a full-featured free product with no operational caps" problem
FreeAgent's free tier through NatWest Group banking is the full product. There is no invoice cap, no transaction cap, no feature lock. Per freeagent.com's pricing page, NatWest, RBS, and Ulster Bank business current account holders, and Mettle account holders who make at least one transaction a month, get FreeAgent at £0 with every standard feature included. Optional add-ons (Smart Capture Unlimited at £5 plus VAT a month, Amazon Marketplace integration at £6 plus VAT a month) remain chargeable, but the core product is unrestricted. Sage Sole Trader Free has hard caps at 5 invoices and 25 AI-categorised transactions a month.
The "I am a landlord with joint-owned properties" problem
FreeAgent for Landlords includes native joint-ownership splits, with different ownership percentages settable per property since the February 2025 release (per FreeAgent's product blog). A landlord with three properties, each with a different ownership split (say 50/50, 60/40, and sole ownership) can configure each separately within one FreeAgent for Landlords account. Per FreeAgent's support article on fast-track landlord guides, submissions are made per property owner: each owner files their own four quarterly updates, end-of-year update, and Final Declaration covering all the properties they own, all from the same shared FreeAgent for Landlords account. Sage's product range has no equivalent landlord-native ownership-split tooling, and Sage 50 does not yet support landlords at all (more on that below).
The "I want Self Assessment plus MTD plus VAT in one product" problem
FreeAgent submits MTD for Income Tax quarterly updates and the Final Declaration directly to HMRC, files MTD VAT returns directly, and includes a Self Assessment wizard that submits SA returns to HMRC, all from the same dashboard. The free-via-bank tier includes every one of these on every supported business type (sole trader, partnership, LLP, landlord, limited company). The Sage equivalent capability is split across products: Sage Sole Trader Free handles MTD for Income Tax and SA103 but not VAT; Sage Accounting Start at £18 plus VAT a month is the only Sage entry tier for VAT-registered sole traders but does not include MTD for Income Tax quarterly submissions (per Compare the Cloud's February 2026 analysis); Sage Accounting Standard at £39 plus VAT a month does both.
The "I want to use the bank account I already have" problem
If you already bank with NatWest, Royal Bank of Scotland, Ulster Bank, or Mettle, the FreeAgent activation is one step through online banking, per mtd.digital's February 2026 setup guide. No new account, no switching cost. NatWest Group's combined UK business banking market share (per UK Finance's 2025 figures) makes this a meaningful population: a substantial number of sole traders, freelancers, and landlords already qualify without changing anything. Sage Sole Trader Free does not condition access on banking, but it also does not offer NatWest Group customers any specific benefit.
What Problems Does Sage Solve For MTD?
Sage's MTD for Income Tax capability is distributed across five separate products, but in the context of this article, only two are directly comparable to FreeAgent's free tier: Sage Sole Trader Free at £0 and Sage Sole Trader paid at £7 plus VAT a month. Here is what each genuinely solves.
The "I want a permanent free MTD product with no banking strings" problem
Sage Sole Trader Free is free permanently, with no time limit, no credit card required, and no banking condition (per sage.com's Self Assessment Software product page, May 2026). It is HMRC-recognised for MTD for Income Tax, supports digital record-keeping for sole-trader income, and generates a completed SA103 Self Assessment form. Sage built this tier explicitly for non-VAT-registered sole traders who need MTD compliance without any ongoing software cost. For anyone who does not bank with NatWest Group and does not want to switch, this is the only free MTD for Income Tax route from a major UK provider with no bank dependency.
The "I want a cheap paid plan if I outgrow the free caps" problem
Sage Sole Trader paid at £7 plus VAT a month, with three months free at sign-up (per sage.com's Free Accounting Software page, May 2026), is the cheapest paid plan from any major UK provider that supports unlimited invoicing and uncapped AI categorisation. CIS features are included at no additional cost from April 2026 for subcontractors in the construction industry (per sage.com's MTD for Sole Trader page, May 2026). The £7 paid tier also adds single UK property income support, which the free tier does not include. FreeAgent's equivalent paid sole trader plan is £19 plus VAT a month at standard pricing, more than twice the Sage £7 rate, although FreeAgent's free-via-NatWest tier sits at £0.
The "I want the option to pay £0.70 a month for added features" problem
Sage introduced an intermediate paid tier between Sage Sole Trader Free and Sage Sole Trader paid for 2026, offering added features, AI capabilities, and expert customer service for £0.70 a month (per sage.com's Sage Sole Trader product page, May 2026). This is the cheapest paid accounting product from any major UK provider, designed for users who fit the free tier's MTD scope but want premium support and limited AI uplift without committing to £7 a month. FreeAgent has no equivalent intermediate tier. This option is only meaningful to free-tier users; for any volume above the caps, the £7 paid plan is the practical step.
The "my accountant runs my books in Sage" problem
Sage's accountant network in the UK is one of the largest among major providers, with Sage for Accountants and Sage MTD IT Agent (the latter expanded in May 2026 per AccountingWEB) supporting practice-wide MTD for Income Tax submission. If your accountant already works in Sage Accounting cloud or Sage 50 client books, sharing data is built into the existing workflow. FreeAgent's accountant network is also substantial, particularly among NatWest Group-aligned practices, with a Practice Dashboard available free to FreeAgent Partners (per freeagent.com's accountant pricing page). The choice often comes down to which platform your accountant runs other clients on.
What FreeAgent Misses
Banking dependency for the free tier: FreeAgent's free tier requires a business current account with NatWest, Royal Bank of Scotland, Ulster Bank, or Mettle. If you do not have one and are not willing to switch, the standard paid pricing is £19 plus VAT a month for sole traders (introductory £9.50), £10 plus VAT a month for landlords (introductory £5), £27 plus VAT a month for partnerships and LLPs (introductory £13.50), and £33 plus VAT a month for limited companies (introductory £16.50), all per freeagent.com's pricing page in May 2026.
Mettle dormancy risk: Mettle requires at least one transaction a month for the FreeAgent free access to remain active, per freeagent.com's Mettle pricing footnote. If a month passes with no Mettle account activity (a quiet client period, a holiday), FreeAgent free access can suspend until the account is reactivated. The common workaround, reported across multiple UK accounting reviews including mtd.digital's February 2026 guide, is to run a small standing order through the Mettle account each month.
Withdrawal-of-offer risk: FreeAgent's free-via-bank arrangement is a commercial decision by NatWest Group. NatWest could change the terms at any time, per mtd.digital's February 2026 verification note. The offer has been continuous since 2018, but is not contractually guaranteed for any specific future period.
Two-account requirement for sole trader plus landlord: Per FreeAgent's support article on multi-income MTD for Income Tax, a user with both sole-trader and unincorporated landlord income needs two separate FreeAgent accounts (a sole trader account and an unincorporated landlord account), accessed through a single login. Quarterly updates cannot be submitted for property income from a sole trader account. Sage Sole Trader paid at £7 plus VAT a month allows sole-trader income plus a single UK property in one product, although Sage's free tier does not include property at all.
What Sage Misses
Operational caps on the free tier: Sage Sole Trader Free caps users at 5 sales invoices a month and 25 AI-categorised transactions a month (per Startups.co.uk's March 2026 Sage review and confirmed across TechRadar Pro's April 2026 free MTD software roundup). For freelancers and consultants invoicing 6 or more clients a month, or with more than 25 transactions a month, the free tier stops being viable.
No property income on the free tier: Sage Sole Trader Free supports sole-trader income only. Landlord income, even a single property, requires Sage Sole Trader paid at £7 plus VAT a month or Sage Accounting Standard at £39 plus VAT a month. FreeAgent for Landlords is available within the free tier for NatWest Group customers, with native per-property reporting.
No VAT on either Sole Trader tier: Sage Sole Trader Free and Sage Sole Trader paid both target non-VAT-registered users. VAT-registered sole traders must move to Sage Accounting Start at £18 plus VAT a month for VAT, but Accounting Start does not currently include MTD for Income Tax quarterly submissions (per Compare the Cloud's February 2026 analysis), forcing VAT-registered users up to Sage Accounting Standard at £39 plus VAT a month for both. FreeAgent handles MTD VAT on every paid tier and on the free-via-bank tier.
Sage 50 still does not support landlords as of May 2026: Sage's flagship desktop product Sage 50 Accounts v33.1, released March 2026, adds MTD for Income Tax for sole traders inside Sage 50 but landlord support is not yet available. Per Sage's Knowledge Base FAQ on Making Tax Digital for Income Tax: "Sage 50 Accounts won't support UK or foreign property landlords" in the current release. Sage has committed to adding landlord support "before the submission deadline," but as of May 2026 no exact date is published. This is not directly relevant to the free-tier comparison but matters to any Sage 50 user evaluating whether to consolidate into Sage Sole Trader paid (which does support a single property) or move to FreeAgent for Landlords for property tracking depth.
Three Pricing Profiles
These profiles surface the conditional-free decision this article exists to address: which free tier's conditions match the user's situation, and what the upgrade path costs when those conditions stop fitting.
Profile A: Tom, freelance illustrator, £54,000 a year, banks with Starling
Tom invoices 3 to 5 clients a month, has no property income, no VAT, and a Starling business account he is happy with.
FreeAgent free: Ruled out. Tom would need to switch business banking to NatWest Group or open a Mettle account.
FreeAgent paid (sole trader, standard): £9.50 plus VAT a month for six months, then £19 plus VAT a month. £228 plus VAT annually at standard pricing.
Sage Sole Trader Free: £0 a year. Within the 5-invoice cap, within the 25 AI-categorisation cap. MTD for Income Tax for sole-trader income, SA103 generation included.
Sage Sole Trader paid: £0 for three months, then £7 plus VAT a month. £84 plus VAT annually at standard pricing.
Verdict: Sage Sole Trader Free. Tom does not bank with NatWest Group and does not want to switch. His invoice volume sits exactly at the cap. Sage's free tier is the only £0 route open to him from a major UK provider.
Profile B: Priya, landlord with 3 joint flats, £64k gross rent, NatWest customer
Three flats, each with different ownership percentages (Priya 100% on one, 50/50 with her sister on another, 60/40 with her partner on the third). She holds a NatWest business current account she opened for the rental income in 2023.
FreeAgent free (via NatWest): £0. FreeAgent for Landlords with native flexible ownership splits for each property. Per-property profit and loss. Quarterly MTD for Income Tax updates and Final Declaration submitted directly to HMRC. SA105 generated. Each owner files their own MTD for Income Tax submissions from the same shared FreeAgent for Landlords account.
Sage Sole Trader Free: Ruled out. The free tier does not support property income.
Sage Sole Trader paid: £0 for three months, then £7 plus VAT a month. Adds single UK property only, so Priya's three-property portfolio is not supported on this tier.
Sage Accounting Standard: £39 plus VAT a month. Full MTD for Income Tax including multi-property, but with manual joint-ownership split calculations rather than native per-property ownership configuration.
Verdict: FreeAgent free. The NatWest banking arrangement makes this £0, and FreeAgent for Landlords' native joint-ownership tooling avoids the manual share-calculation work that Sage Accounting Standard would require at £39 plus VAT a month. Priya's situation is the textbook case where FreeAgent's bank-tied free route delivers a feature set that would cost her more than £450 plus VAT a year on Sage.
Profile C: Liam, IT consultant, £72k/year, VAT-registered, Royal Bank of Scotland customer.
12 to 15 invoices a month to corporate clients, VAT-registered (above the £90,000 turnover threshold when contractor day-rate gross figures are included), no property income, RBS business banking since 2019.
FreeAgent free (via RBS): £0. Full sole trader plan with MTD for Income Tax quarterly submissions, MTD for VAT, Self Assessment, unlimited invoicing, bank feeds. Liam's situation is unusual: he qualifies for the most fully-featured free MTD product available from any major UK provider, including VAT, simply because he banks with RBS.
Sage Sole Trader Free: Ruled out. The free tier does not support VAT, and Liam is above the 5-invoice cap.
Sage Sole Trader paid: Ruled out. This tier does not support VAT.
Sage Accounting Start: £18 plus VAT a month, but per Compare the Cloud's February 2026 analysis, does not currently include MTD for Income Tax quarterly submissions. Forces Liam up to Sage Accounting Standard at £39 plus VAT a month.
Sage Accounting Standard: £39 plus VAT a month. £468 plus VAT a year. Full MTD for Income Tax plus VAT.
Verdict: FreeAgent free. The Sage product fork actively works against Liam because no Sage product covers all three of his requirements (VAT-registered sole trader, full MTD for Income Tax quarterly submissions, more than five invoices a month) below £39 plus VAT a month. RBS banking unlocks the same capability at £0 on FreeAgent. This is the largest absolute saving in any of the three profiles: approximately £468 plus VAT a year compared with Sage Accounting Standard.
Honest Caveat Shared Across All Three Profiles
Neither FreeAgent nor any Sage product is purpose-built for landlords with portfolio-level investment analytics, Section 24 finance cost modelling, or HMO unit-level tracking. RentalBux, Hammock, Landlord Vision, and Landlord Studio cover that gap. The choice in this article is "which general-accounting tool gives me free MTD for Income Tax" rather than "which is the best landlord platform."
Three Observations Not On The Marketing Sites
These are findings from working through both providers' Knowledge Base articles, support documentation, and Community Hub threads rather than their landing pages.
Observation 1: FreeAgent's two-account requirement for hybrid income is not flagged on the pricing page
FreeAgent's pricing page presents sole trader and landlord as two separate plans with different prices (£19 plus VAT a month for sole trader, £10 plus VAT a month for landlord, both at standard pricing). What the pricing page does not flag is that a user with both income types needs both products. Per FreeAgent's support article on using FreeAgent for multi-income MTD for Income Tax: "If you have a self-employed business and also rent out properties, you'll need a separate FreeAgent account for each income stream. Therefore, you'll need a sole trader account and an unincorporated landlord account. Please note that you can't use a sole trader account to send quarterly updates about your property income and expenses to HMRC. The property functionality is only available in unincorporated landlord accounts." For users on the NatWest Group free tier, both accounts are free, so this is a workflow consideration rather than a cost issue. For paying users, this can effectively double the FreeAgent subscription cost for hybrid-income filers. Sage Sole Trader paid at £7 plus VAT a month combines sole-trader and single-property income in one product, which is a structural advantage for the narrow hybrid-income use case.
Observation 2: Sage Sole Trader Free's invoice cap is per calendar month, not rolling
Sage's marketing language describes the 5-invoice cap as a monthly limit but does not specify the reset cadence on its product page. Per Sage's own support documentation and the Sage Community Hub thread on Sole Trader limits (December 2025), the cap resets on the 1st of each calendar month, not 30 days from the user's most recent invoice. The practical effect: a freelancer who issues five invoices on the 28th of a month and another four on the 2nd of the following month is fine; the same freelancer issuing six invoices in the last week of a month would have the sixth blocked entirely. For users with bursty invoicing patterns (typically end-of-project deliveries), the calendar-month reset is a meaningful operational detail. FreeAgent has no equivalent constraint at any pricing tier.
Observation 3: FreeAgent free remains active for as long as the qualifying bank account stays open, but Mettle dormancy can suspend access
FreeAgent's pricing page states that NatWest, Royal Bank of Scotland, and Ulster Bank business current account holders get free FreeAgent "for as long as you retain the account." The Mettle footnote adds a stricter condition: Mettle holders must "make at least one transaction per month" for free access to remain active. The practical implication, per Business Expert's April 2026 NatWest banking review, is that a Mettle account that goes dormant for a month (a quiet client period, a holiday, an inter-quarter lull) can suspend FreeAgent until the account is reactivated. For sole traders with irregular income, this can mean filing manually for a quarter where Mettle went dormant. The most common workaround across UK accounting reviews is to run a small standing order (typically £1 a month) through the Mettle account to keep activity continuous. Sage Sole Trader Free has no equivalent dormancy condition because there is no banking dependency in the first place.
Honest Comparison Table
Features | FreeAgent | Sage (Sole Trader Free / Sole Trader paid / Accounting tiers) |
|---|---|---|
Free tier availability | Free if banking with NatWest, RBS, Ulster Bank, or Mettle (1+ tx/month) | Sage Sole Trader Free: free, no banking condition, no time limit |
Free tier feature scope | Full product, no caps; all features unlocked | 5 invoices a month cap, 25 AI categorisations a month cap, sole-trader income only |
Free tier property income | Yes (FreeAgent for Landlords, native ownership splits) | No (free tier is sole-trader only) |
Free tier VAT | Yes (full MTD for VAT included) | No (Sage Accounting Start required for VAT; £18 plus VAT a month) |
Free tier invoicing | Unlimited | 5 a month |
Free tier bank feeds | Included; Mettle bundled, Open Banking for others | Basic bank feed included via Open Banking |
Cheapest paid plan for non-VAT sole trader | £9.50 plus VAT a month for 6 months, then £19 plus VAT | £0.70 a month (intermediate tier) or £7 plus VAT a month (with 3 months free) |
Joint-ownership splits for landlords | Native, per-property configurable (different % per property) | Manual share calculations on all Sage tiers as of May 2026 |
Sole trader plus landlord in one product | No: separate FreeAgent accounts required (one login) | Sage Sole Trader paid (£7+VAT) supports sole trader plus single property |
MTD ITSA quarterly updates direct to HMRC | Yes, on all tiers | Yes on Sole Trader Free/paid and Accounting Standard; NO on Accounting Start |
MTD for VAT | Yes, all tiers | Only from Accounting Start (£18+VAT) and above; not on Sole Trader tiers |
Self Assessment SA submission | Yes (SA wizard, all tiers) | Yes (SA103 on Sole Trader tiers; Standard for fuller SA support) |
Desktop product available | No (cloud-only) | Yes (Sage 50 v33.1+, sole traders only, no landlord support yet) |
Accountant ecosystem | Practice Dashboard free for FreeAgent Partners | Sage for Accountants and Sage MTD IT Agent (expanded May 2026) |
UK ownership and longevity | Acquired by NatWest Group in 2018; UK-built since 2007 | 40+ years UK accounting experience |
Where Each Genuinely Wins
FreeAgent free (via NatWest, RBS, Ulster Bank, or Mettle) wins for:
Anyone already banking with the NatWest Group. The free tier delivers the full product with no operational caps, including MTD for Income Tax, MTD for VAT, Self Assessment, and FreeAgent for Landlords with native joint-ownership splits.
Unincorporated landlords with joint-owned properties or multiple properties with different ownership percentages. Native per-property ownership configuration is structurally more practical than Sage's manual share calculations.
Sole traders opening a new business bank account in 2026. Pairing Mettle (free digital business banking) with FreeAgent free turns necessary admin into a £0 MTD setup.
VAT-registered sole traders banking with NatWest Group. Free FreeAgent includes MTD for VAT, where the closest Sage equivalent capability is Sage Accounting Standard at £39 plus VAT a month.
Sage Sole Trader Free wins for:
Non-VAT sole traders who do not bank with NatWest Group and do not want to switch. It is the only free MTD for Income Tax route from a major UK provider with no banking dependency.
Freelancers, consultants, and side-hustlers with low invoicing volumes (5 or fewer a month) and modest transaction counts (25 or fewer AI categorisations a month).
Users who specifically want a Sage product because their accountant runs Sage practice client books and prefers Sage's ecosystem.
Sage Sole Trader paid (£7 plus VAT a month) wins for:
Non-VAT sole traders who outgrow the free tier's caps but do not have NatWest Group banking. At £7 plus VAT with three months free, this undercuts FreeAgent's standard sole trader pricing of £19 plus VAT a month.
Sole traders with a single UK property and sole-trader income who want both in one product. Sage Sole Trader paid supports this combination; FreeAgent requires two separate accounts (free if both qualify under NatWest Group banking, otherwise £19 plus £10 plus VAT a month at standard pricing).
Conclusion
The honest answer to "FreeAgent or Sage for MTD?" is not which product has more features or a better interface. It is which conditional-free tier fits your situation. FreeAgent free is the most capable free MTD for Income Tax product available from any major UK provider, but only if you bank with NatWest, Royal Bank of Scotland, Ulster Bank, or Mettle, or are willing to switch. Sage Sole Trader Free is genuinely free with no banking conditions, but capped at 5 invoices and 25 AI categorisations a month, with no property and no VAT support on the free tier.
If you already bank with NatWest Group, FreeAgent free is the clearer choice. The full product unlocks at £0 and includes MTD for Income Tax for sole traders, partnerships, LLPs, limited companies, and landlords, with FreeAgent for Landlords' native joint-ownership tooling sitting inside the free tier. If your business bank is elsewhere and the operational caps work for your invoicing volume, Sage Sole Trader Free is the only £0 route open to you from a major UK provider, with a clean upgrade path to Sage Sole Trader paid at £7 plus VAT a month when the caps stop fitting.
Neither is the right answer for landlords needing portfolio-level investment analytics, Section 24 modelling, HMO unit tracking, or tenancy management. That is a different decision, addressed elsewhere in our content. For straightforward MTD for Income Tax compliance among UK providers offering a permanent free tier, this comparison comes down to one practical question: does your bank unlock the door, or do the caps?
FAQs
Last updated May2026. Pricing and feature data verified from primary sources. RentalBux is HMRC-recognised for MTD for Income Tax. This article reflects independent comparison in May2026 and does not constitute financial or tax advice.
