How much capital gains tax do I pay in the UK?

For disposals of shares, funds, and ETFs in 2026/27, taxable gains are generally charged at 18% to the extent they fall within the unused basic-rate band and 24% above it. The individual annual exempt amount is £3,000.

What is the capital gains tax allowance for 2026/27?

The individual annual exempt amount for the 2026/27 tax year is £3,000. It was £6,000 in 2023/24 and £12,300 in 2022/23.

How does the 30-day bed and breakfast rule work?

If you sell shares and repurchase shares of the same type within 30 days, the sale is matched with the subsequent purchase for CGT purposes. This anti-avoidance rule prevents investors from selling to realise a loss and immediately rebuying. FiscalFox applies this rule automatically.

Do I need to file SA108 for capital gains?

If you are registered for Self Assessment, you generally need to report gains when taxable gains exceed the annual exempt amount, when total disposal proceeds exceed £50,000 for 2023/24 onwards, or when you need to claim allowable losses or make another capital gains claim.

What does FiscalFox calculate for UK shares?

FiscalFox is a specialist UK capital gains tax calculator for share investors. It applies same-day matching, the 30-day bed and breakfast rule, and Section 104 pooling, then generates SA108-ready supporting reports. It has 13 built-in imports: Vanguard, Hargreaves Lansdown, Freetrade, Trading 212, eToro, InvestEngine, Moneybox, Saxo Bank, Interactive Brokers, Robinhood, Revolut, AJ Bell, and IG.

How do I report share sales to HMRC?

Share sales are reported on the SA108 supplementary pages of your Self Assessment tax return. You need to calculate the gain or loss on each disposal using HMRC's share matching rules, then enter the totals on SA108. The deadline is 31 January following the end of the tax year. FiscalFox can generate the SA108 schedules automatically from your broker export files.

Do I need to pay capital gains tax if my gains are under GBP 3,000?

If your total taxable gains are under the annual exempt amount, you do not owe CGT on those gains. If you are registered for Self Assessment, you may still need to report when total disposal proceeds exceed GBP 50,000 for 2023/24 onwards, or to claim allowable losses.

How do I calculate capital gains on shares?

Capital gains on shares are calculated as disposal proceeds minus allowable costs. HMRC requires same-day matching first, then acquisitions in the following 30 days, then Section 104 pooling. FiscalFox automates imported transaction matching and the current-year estimate. A brought-forward capital-loss balance must currently be applied separately.

What is the Section 104 pooling rule?

The Section 104 pool is a running average cost calculation for shares of the same type. When you buy shares, the cost is added to the pool. When you sell shares not matched by the same-day or 30-day rules, the cost is calculated as a proportion of the total pool cost based on the number of shares sold.

What are the current UK CGT rates?

From 30 October 2024: 18% for basic rate taxpayers and 24% for higher/additional rate taxpayers on shares and other assets. Before 30 October 2024: 10% and 20% respectively. Residential property has different rates.

What is the same-day rule for capital gains?

The same-day rule requires that if you sell shares and buy shares of the same type on the same day, the sale is matched with the same-day purchase for CGT purposes, regardless of the order of transactions during the day.

Can I carry forward capital losses?

Yes. If your capital losses exceed your capital gains in a tax year, you can carry forward the excess losses to offset against future capital gains indefinitely. You must report the losses to HMRC within 4 years of the end of the tax year in which they arose.

Is it really free to start?

Yes. Capital gains calculations are completely free, including calculations across multiple broker files. The one-time £29.99 payment is only needed to download the HMRC report pack, and unlocks the selected tax year plus earlier years in the calculation. There is no subscription.

Do you support my broker?

FiscalFox has 13 built-in broker imports: Vanguard, Hargreaves Lansdown, Freetrade, Trading 212, eToro, InvestEngine, Moneybox, Saxo Bank, Interactive Brokers, Robinhood, Revolut, AJ Bell, and IG. Other supported transaction files can use the opt-in AI import path after sign-in and consent.

Does FiscalFox apply HMRC share matching rules and protect data?

FiscalFox applies same-day, following-30-day and Section 104 matching in HMRC's prescribed order. Built-in broker parsing runs in the browser where possible; signed-in storage and opt-in AI parsing are described in the privacy policy. FiscalFox is a calculation tool, not tax advice or an HMRC submission.

When did CGT rates change in the UK?

The most recent change was on 30 October 2024, when the Autumn Budget increased CGT rates on shares from 10%/20% to 18%/24%. The annual exempt amount was reduced from £12,300 to £6,000 in April 2023, and further reduced to £3,000 in April 2024.

How do I know FiscalFox's calculations are correct?

FiscalFox applies the exact same share-matching rules HMRC uses to verify Self Assessment returns: same-day matching, 30-day bed and breakfast rules, and Section 104 pooling, in the correct priority order. Every disposal is traced and the calculations are defensible if you are ever questioned.

When do I need to pay for the report pack?

The free tier lets you calculate and view your capital gains on-screen. Pay £29.99 only when you want the downloadable HMRC-ready PDF and CSV report pack. The payment unlocks the selected tax year and every earlier year contained in the calculation.

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?

If HMRC finds an error in your Self Assessment, you pay the extra tax plus interest, and a careless mistake can carry a penalty of up to 30% of the underpaid tax. Most DIY errors come from missing the same-day and 30-day matching rules. FiscalFox applies them automatically and keeps the workings behind every disposal so you can evidence your figures.

Which Morgan Stanley stock-plan reports does FiscalFox support?

FiscalFox has deterministic import recipes for ESPP Purchase History XLS/XLSX, ESPP Sales CSV, and completed rows in the Releases Report CSV. It rejects renamed or materially different layouts instead of guessing.

Should I upload both Morgan Stanley Purchase History and ESPP Sales?

Yes. ESPP Sales contains disposal rows, but it does not reconstruct all earlier acquisitions. Upload Purchase History as well, including older purchases that may remain in the Section 104 pool.

How does FiscalFox treat the ESPP discount?

For the supported Purchase History layout, FiscalFox records the purchase-date fair market value as the acquisition value and preserves the employee purchase price as audit evidence. Employment-related securities can require scheme-specific review, so confirm the treatment against your plan and payroll records.

Why are my Morgan Stanley rows marked provisional?

UK capital gains calculations must use sterling values at the relevant dates. If the report only supplies USD, FiscalFox keeps USD visible and flags the affected rows; it does not relabel dollar amounts as pounds.

Morgan Stanley Stock Plan CGT Calculator UK

FiscalFox supports three Morgan Stanley stock-plan report layouts: ESPP Purchase History, ESPP Sales, and a constrained completed-release recipe. Parsing runs locally and deterministically. A recognized file is imported completely or rejected completely, and USD-only rows remain visibly provisional until their sterling values are documented.

How to export the supported reports

Sign in to Morgan Stanley at Work. Morgan Stanley now describes StockPlan Connect as part of Morgan Stanley at Work, but the names available inside an account can vary by employer and plan.

Open your stock plan account: Sign in to Morgan Stanley at Work (formerly StockPlan Connect) and open the taxable employee share plan you want to calculate.
Download acquisitions: For ESPP shares, export Purchase History as the original XLS or XLSX workbook. Keep the Fund line and the original headings.
Download disposals: For ESPP sales, export ESPP Sales as CSV. Upload it together with Purchase History so earlier acquisition costs are available.
Download stock-unit releases: For supported stock units, export the Releases Report as CSV. The current release recipe recognises completed GSU Class C rows and asks you to confirm the inferred Alphabet Class C identity.
Review sterling values: Morgan Stanley stock-plan reports commonly show USD without a UK transaction-date conversion. FiscalFox marks those rows provisional until a documented GBP amount or GBP-per-USD rate is supplied.

Upload the complete holding history

A sales-only or tax-year-only report can omit shares still carried in a Section 104 pool. Include Purchase History from the earliest relevant acquisition and every later disposal or release.

Exactly what the importer reads

Report	Imported result	Guardrail
Purchase History XLS/XLSX	ESPP acquisition at purchase-date FMV; discounted purchase price retained in the audit description	Requires the original Fund: SYMBOL metadata
ESPP Sales CSV	Gross disposal from quantity × sale price; gross-to-net difference recorded as disposal fees	Does not create missing purchase rows from the sales report
Releases Report CSV	Net shares delivered as an acquisition at the vest-date price	Only completed supported plan labels; inferred identity stays under review

The supported Purchase History recipe uses purchase-date fair market value rather than the discounted employee purchase price. HMRC's guidance says that unrestricted employment-related shares acquired for less than market value are generally treated as acquired at market value for CGT, and amounts already charged to employment income can be added when preventing double taxation. The exact result still depends on your plan and payroll treatment, so retain the Morgan Stanley report, payslips, and any employer tax statement. See HMRC's employee share scheme helpsheet and its double-taxation guidance.

Morgan Stanley's “Ordinary Income”, “Capital Gain”, and “Qualifying Disposition” fields describe US stock-plan treatment. FiscalFox preserves them as source evidence but does not substitute them for the UK share-matching calculation.

Why USD rows are provisional

The source reports we validated state that values are in US dollars unless specified. FiscalFox therefore keeps the transaction currency as USD and marks every affected acquisition or disposal for review. It never changes the currency label to GBP while retaining the same number. A documented GBP value column or a positive GBP-per-USD rate can produce a sterling row; otherwise, correct the transaction values before relying on the report pack.

Why Morgan Stanley imports fail closed

If a recognized report contains an invalid date, quantity, market value, unreconciled sale, unsupported release status, or unknown release-plan identity, no rows from that file are saved. This prevents a partial employee-share history from producing a plausible but incomplete pool. Re-export the original report, and contact support if its unchanged layout is still rejected.

Calculate and review the result

Open the FiscalFox calculator and choose Morgan Stanley.
Upload the acquisition and disposal reports needed to cover the complete holding history.
Review every provisional FX or inferred-security warning and replace unsupported values with documented sterling figures.
Check the same-day, 30-day, and Section 104 workings before using the output for Self Assessment.