Same-day matching
Sales matched with acquisitions made that day.
2025/26Self Assessment is open
Your capital gains tax, done.
Upload your broker exports. FiscalFox applies HMRC matching rules, calculates your gains and gives you clear workings so you can file with confidence.
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FiscalFox calculation preview
Capital Gains Summary2025/26SA108-ready
Capital gains summary for tax year 2025/26
£8,571.56
Avg. rate: 23.95%
Taxable Gains
£35,782.32
After £3,000 exemption
Total Gains:£46,811.65Losses:£8,029.33Net:£38,782.32
Cumulative gains over time
Gains/losses by asset
A calculation you can check
Share disposals matched in HMRC order.
FiscalFox applies the published share-matching sequence, then shows the proceeds, allowable cost and treatment behind each disposal.
Matching rules and tax-year allowance applied automatically
30-day rule
Repurchases after a sale checked before the pool.
Section 104 pool
Average pooled cost tracked across your holdings.
Annual exemption
The allowance for your selected tax year is applied.
Accumulation fund income (ERI)Calculated automatically for supported funds.
15 broker imports supported
Choose a broker to begin.
Pick yours and we’ll show you which file to export and where to find it. Combine brokers in the same free calculation.
AJ Bell
eToro
Freetrade
HL
IG
IBKR
InvestEngine
Moneybox
Morgan Stanley
Revolut
Robinhood
Saxo
Trading 212
Vanguard
WebullDon’t see your broker?
Import another statement with the opt-in parser. FiscalFox asks for consent before processing it.
See it before you sign up
See the actual FiscalFox workflow.
Switch steps to explore the same interface used to import trades, review a calculation and download the report pack.
Report pack · £29.99 one-time
The figures for your return. And the evidence behind them.
Transfer the SA108 figures into Self Assessment, then keep the detailed workings if you or HMRC need to trace a number later.
Complete the return
Box-ready totals for listed shares and securities.
Check every disposal
Proceeds, allowable cost, gain or loss, and matching rule.
Keep a defensible record
Section 104 pool movements and source transactions.
Your 2025/26 report pack
PDF + CSVSA108 supporting schedule
Listed shares and securities
Tax year 6 April 2025 to 5 April 2026
Box 23
Number of disposals
15
Box 24
Disposal proceeds
£102,468
Box 25
Allowable costs
£63,686
Box 26
Gains before losses
£46,812
Box 27
Losses in the year
£8,029
Estimated Capital Gains Tax
£8,571.56
FiscalFox customer reviews
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Simple pricing
Calculate first. Pay only for the report.
No subscription and no card required to see your calculation. An accountant would typically charge £200 or more for the same computations.
On-screen calculation
Always free£0no sign-up required
Upload your files, combine brokers and check the result before deciding whether you need downloadable records.
Calculate capital gains
Combine multiple broker exports
Review gains, losses and transactions
See estimated tax on-screen
Download reviewable report packs
HMRC report pack
One-time payment£29.99per selected tax year
Unlock downloadable reports for one selected tax year. Every other tax year is purchased separately.
Capital Gains Tax Summary (PDF and CSV)
Detailed SA108 supporting schedule
Disposal computations and matching workings
Complete transaction history
Dividend and interest summary
Dedicated support with your report pack
Calculating CGT for clients?
Use a multi-client workspace with firm billing, working papers and team access.
Free UK Capital Gains Tax guides
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Questions, answered.
Is it really free to start?
Yes. Upload your broker export, calculate your gains, and view everything on-screen for free. You only pay if you want downloadable, reviewable SA108 supporting reports.
Will my broker work?
FiscalFox has 15 built-in imports: Vanguard, Hargreaves Lansdown, Freetrade, Trading 212, eToro, InvestEngine, Moneybox, Saxo, Interactive Brokers, Robinhood, Revolut, Webull, AJ Bell, IG and Morgan Stanley. For unsupported formats, you can opt in to AI parsing after signing in and consenting to send the file for extraction.
How do I know the numbers are right?
FiscalFox implements HMRC's published share-matching sequence: same-day matching, the 30-day bed and breakfast rule, and Section 104 pooling. The detailed report traces the cost and proceeds used for each disposal so you or your adviser can review the calculation.
Is my data secure?
For supported brokers, CSV and Excel files are processed in your browser session. If an unusual format needs AI help, FiscalFox asks for your consent before sending the file for extraction.
When do I need to upgrade?
The free tier lets you calculate and view your gains on-screen. Pay £29.99 only when you want the downloadable PDF and CSV report pack for a selected tax year. Every other tax year requires its own purchase.
Is there a subscription?
No. The report pack is a one-time £29.99 payment with no recurring charge. You can download the unlocked reports again whenever you need them.
What happens if my capital gains are wrong on my tax return?
HMRC can collect extra tax and interest for an error and may charge a penalty depending on the circumstances, behaviour and disclosure. FiscalFox keeps the matching workings behind each disposal so you or your adviser can review the figures before filing.