QuickBooks Sole Trader vs IRIS KashFlow
Verified ratings, real UK pricing and the compliance detail, weighed side by side — with a written verdict at the end.
QuickBooks Sole Trader
Accounting Software
- United Kingdom
- Phone
- Live Chat
- Knowledge Base
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 | QuickBooks Sole Trader | IRIS KashFlow |
|---|---|---|
| What it costs | ||
| Starting priceLowest paid tier, excluding VAT | £9/mo | £10.50/mo |
| Free version | NoNo | 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 | 273 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.
- QuickBooks Sole Trader
- IRIS KashFlow
| Dimension | QuickBooks Sole Trader | IRIS KashFlow | Gap |
|---|---|---|---|
| Ease of use | 4.1 | 4.0 | 0.1 to QuickBooks Sole Trader |
| Value for money | 4.0 | 3.9 | 0.1 to QuickBooks Sole Trader |
| Customer support | 4.1 | 4.0 | 0.1 to QuickBooks Sole Trader |
| 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 |
|---|---|---|---|---|---|
| QuickBooks Sole Trader | 47% (129 reviews) | 33% (91 reviews) | 9% (24 reviews) | 8% (21 reviews) | 3% (8 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.
- Only QuickBooks Sole Trader
- 847%
- Only IRIS KashFlow
- 953%
17 features listed across both products.
What only one of them does
QuickBooks Sole Trader
8- Accountant access
- Automatic mileage tracking
- Income and expense categorisation
- Invoicing and online payments
+ 4 more in the table below
IRIS KashFlow
9- Bank reconciliation
- Expense tracking
- Invoicing and quotes
- IRIS group backing
+ 5 more in the table below
| Detail | QuickBooks Sole Trader | IRIS KashFlow |
|---|---|---|
| Where they differ · 17 | ||
| Accountant access | YesYes | NoNo |
| Automatic mileage tracking | YesYes | NoNo |
| Income and expense categorisation | YesYes | NoNo |
| Invoicing and online payments | YesYes | NoNo |
| Mobile app | YesYes | NoNo |
| MTD for Income Tax submissions | YesYes | NoNo |
| Receipt capture | YesYes | NoNo |
| Self Assessment preparation | YesYes | NoNo |
| Bank reconciliation | NoNo | YesYes |
| Expense tracking | NoNo | YesYes |
| Invoicing and quotes | NoNo | YesYes |
| IRIS group backing | NoNo | YesYes |
| Making Tax Digital for VAT | NoNo | YesYes |
| Multi user on higher tier | NoNo | YesYes |
| Optional RTI payroll add on | NoNo | YesYes |
| Reporting | NoNo | YesYes |
| VAT returns | NoNo | 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 | QuickBooks Sole Trader | IRIS KashFlow |
|---|---|---|
| Verified against vendor documentation | ||
| HMRC-recognised for MTD for VAT | Not listedNot listed | YesYes |
| HMRC-recognised for MTD for ITSA | YesYes | Not listedNot listed |
| Making Tax Digital ready | YesYes | YesYes |
| Open Banking bank feeds | YesYes | Not listedNot listed |
| UK-based support | Telephone and chat support | 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.
QuickBooks Sole Trader
IRIS KashFlow
Sole Trader Plus
£9/moLower
- 1 user plus accountant access
- Automatic mileage tracking
- Receipt capture
Starter
£10.50/mo
- Invoicing and quotes
- Bank reconciliation
- VAT returns
No comparable tier listed
Business
£22/mo
- More features
- Multi user
- Payroll add on available
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 QuickBooks Sole Trader if
- It costs less to get started — £9/mo against £10.50/mo.
- It lists 8 features IRIS KashFlow does not, including accountant access.
- It covers more of the UK obligations we check — 4 of them against 2.
Choose IRIS KashFlow if
- It lists 9 features QuickBooks Sole Trader does not, including bank reconciliation.
On verified Assaylist reviews, QuickBooks Sole Trader currently rates 4.1 against 4.0 for IRIS KashFlow. That gap is not the whole story: QuickBooks Sole Trader starts at £9/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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