FreeAgent vs IRIS KashFlow
Verified ratings, real UK pricing and the compliance detail, weighed side by side — with a written verdict at the end.
FreeAgent
Accounting Software
- United Kingdom
- Phone
- Knowledge Base
- Forum
IRIS KashFlow
Accounting Software
- United Kingdom
- Phone
- Knowledge Base
- Forum
Evenly matched on verified reviews — 4.1 against 4.0. Price and fit will decide this one, not the score.
The short version
What each one costs and how each one rates, side by side. Only the rows where leading means something are marked; vendor and availability are in the overview above.
| Detail | FreeAgent | IRIS KashFlow |
|---|---|---|
| What it costs | ||
| Starting priceLowest paid tier, excluding VAT | £19/mo | £10.50/mo |
| Free version | YesYes | NoNo |
| Free trial | YesYes | YesYes |
| How it rates | ||
| Overall ratingMean of verified Assaylist reviews | 4.1 | 4.0 |
| Verified reviewsVolume is evidence, not a score — this row is not a contest | 297 reviews | 221 reviews |
Highlighted where one clearly leads. Rows without a highlight are not a contest.
How reviewers score them
Across the four dimensions we ask every reviewer about — and, below, the star split each average is built from.
- FreeAgent
- IRIS KashFlow
| Dimension | FreeAgent | IRIS KashFlow | Gap |
|---|---|---|---|
| Ease of use | 4.0 | 4.0 | Level |
| Value for money | 4.0 | 3.9 | 0.1 to FreeAgent |
| Customer support | 4.0 | 4.0 | Level |
| Functionality | 4.0 | 4.0 | Level |
What each average is made of
Two products can share an average and not share a reputation. These bars show the star split behind each score.
| Product | 5 star | 4 star | 3 star | 2 star | 1 star |
|---|---|---|---|---|---|
| FreeAgent | 42% (126 reviews) | 32% (96 reviews) | 16% (49 reviews) | 7% (20 reviews) | 2% (6 reviews) |
| IRIS KashFlow | 37% (82 reviews) | 40% (89 reviews) | 14% (30 reviews) | 6% (13 reviews) | 3% (7 reviews) |
Feature by feature
Everything either vendor publishes, split into what separates them and what they share.
- Both products
- 15%
- Only FreeAgent
- 1359%
- Only IRIS KashFlow
- 836%
22 features listed across both products.
What only one of them does
FreeAgent
13- Bank feeds
- CIS support
- Corporation Tax tracking
- Director Self Assessment
+ 9 more in the table below
IRIS KashFlow
8- Bank reconciliation
- Expense tracking
- Invoicing and quotes
- IRIS group backing
+ 4 more in the table below
Showing 22 of 22 features
| Detail | FreeAgent | IRIS KashFlow |
|---|---|---|
| Where they differ · 21 | ||
| Bank feeds | YesYes | NoNo |
| CIS support | YesYes | NoNo |
| Corporation Tax tracking | YesYes | NoNo |
| Director Self Assessment | YesYes | NoNo |
| Dividend documentation | YesYes | NoNo |
| Expense and mileage tracking | YesYes | NoNo |
| Invoicing and estimates | YesYes | NoNo |
| Mobile app | YesYes | NoNo |
| MTD for Income Tax | YesYes | NoNo |
| Payroll | YesYes | NoNo |
| Radar business insights | YesYes | NoNo |
| Tax timeline with amounts and deadlines | YesYes | NoNo |
| Time tracking | YesYes | NoNo |
| Bank reconciliation | NoNo | YesYes |
| Expense tracking | NoNo | YesYes |
| Invoicing and quotes | NoNo | YesYes |
| IRIS group backing | NoNo | YesYes |
| Multi user on higher tier | NoNo | YesYes |
| Optional RTI payroll add on | NoNo | YesYes |
| Reporting | NoNo | YesYes |
| VAT returns | NoNo | YesYes |
| Where they match · 1 | ||
| Making Tax Digital for VAT | YesYes | YesYes |
A dash means the vendor has not published a feature list — which is not the same as the feature being unavailable.
How they handle UK obligations
Checked against the vendor's own documentation or HMRC's published list. A dash means we have not verified it — never that it is missing.
| Detail | FreeAgent | IRIS KashFlow |
|---|---|---|
| Verified against vendor documentation | ||
| HMRC-recognised for MTD for VAT | YesYes | YesYes |
| HMRC-recognised for MTD for ITSA | YesYes | Not listedNot listed |
| Making Tax Digital ready | YesYes | YesYes |
| RTI-compliant payroll | YesYes | Not listedNot listed |
| CIS support | YesYes | Not listedNot listed |
| Open Banking bank feeds | YesYes | Not listedNot listed |
| Data residency | United Kingdom | Not stated |
| UK-based support | UK based support team | UK support team |
What each tier costs
Both line-ups on one ladder, so the middle tier on one side sits next to the middle tier on the other.
FreeAgent
IRIS KashFlow
Free with NatWest, RBS, Ulster or Mettle
FreeLower
- Full product, not a limited version
- For as long as you hold the account
- Mettle requires one transaction a month
Starter
£10.50/mo
- Invoicing and quotes
- Bank reconciliation
- VAT returns
Sole trader
£19/moLower
- Self Assessment preparation
- MTD for Income Tax
- Invoicing and expenses
Business
£22/mo
- More features
- Multi user
- Payroll add on available
Limited company
£33/mo
- Corporation Tax tracking
- Dividend documentation
- Director Self Assessment
No comparable tier listed
Rungs are matched by position in each vendor’s own line-up, not by what the tiers include — an entry plan on one side may cover more than the other. Prices exclude VAT unless stated, and per-seat plans are quoted per seat. Always confirm on the vendor’s own site.
Which should you choose?
Two answers, because there are two right ones depending on what you need.
Choose FreeAgent if
- There is a free tier you can stay on, which IRIS KashFlow does not offer.
- It lists 13 features IRIS KashFlow does not, including bank feeds.
- It covers more of the UK obligations we check — 7 of them against 2.
Choose IRIS KashFlow if
- It costs less to get started — £10.50/mo against £19/mo.
- It lists 8 features FreeAgent does not, including bank reconciliation.
On verified Assaylist reviews, FreeAgent currently rates 4.1 against 4.0 for IRIS KashFlow. That gap is not the whole story: FreeAgent starts at £19/mo and IRIS KashFlow at £10.50/mo, so the right answer depends on the tier you actually need and on which one handles your UK obligations. Read both profiles before you commit, and confirm current pricing on the vendor's own site.
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