Fidelity UK Capital Gains Tax Calculator

    Import a Fidelity UK transaction-history CSV and apply HMRC share matching in your browser.

    Updated 26 September 20264 min readChecked against published GOV.UK/HMRC guidance

    Published by FiscalFox · Editorial accountability: Grant Christopher Sloane

    • Native browser-side import
    • Dealing and FX charges matched to trades
    • HMRC share-matching calculation
    Fidelity logo
    CSV
    Shares and funds
    Fees attached

    Built-in parsing reads the transaction history in your browser and keeps each charge with its trade.

    FiscalFox supports Fidelity UK as a built-in broker import. Upload the transaction-history CSV for a taxable account and FiscalFox reads each completed trade, attaches dealing fees and FX charges, and applies the UK same-day, 30-day and Section 104 matching rules.

    How to export Fidelity transaction history

    Menu names on the Fidelity website can change, so these steps describe what to download rather than an exact click path.

    1. Sign in to Fidelity Personal Investing and open the transaction history for the taxable account.
    2. Choose the full date range, from the earliest relevant purchase through the latest disposal.
    3. Download the original CSV. Do not copy the table into Excel and re-save it.
    4. Upload the unchanged file using the Fidelity option in FiscalFox.

    Leave out ISA and pension activity

    Gains inside an ISA or SIPP are not taxable. Only upload history for accounts whose disposals belong in your UK capital gains calculation.

    Fidelity columns FiscalFox recognises

    Fidelity columnPurpose
    Order dateThe acquisition or disposal date
    Transaction typeBuy, sell, dividend, fee, bonus issue or transfer
    InvestmentsThe share or fund the row relates to
    Amount and QuantityCash value and number of units
    Reference NumberKeeps each transaction distinct
    StatusOnly completed rows are imported

    What the Fidelity import does

    • Ignores the duplicate cash legs Fidelity adds alongside each trade.
    • Attaches separate dealing fee and FX charge rows to the matching trade on the same date.
    • Excludes cancelled and pending rows.
    • Keeps bonus issues as zero-cost additions to the holding.
    • Marks dividends for review, because transaction history does not confirm the fund's domicile or the tax-certificate figures.

    If a row cannot be read safely, for example a fee with no completed trade on the same date, FiscalFox stops and imports nothing from that file rather than guessing.

    Stock transfers in and out

    A stock transfer in shows shares arriving without a purchase price, so the allowable cost is unknown and gains on those shares stay under review. If a spouse or civil partner transferred them, your cost is their original allowable cost. If they came from another account in your name, upload that account's purchase history as well.

    A stock transfer out is not a sale. FiscalFox treats it as a no gain, no loss transfer at the pooled cost. Confirm it went to a spouse or civil partner; if the shares moved to another account in your own name, it is not a disposal and that account's history should be uploaded too. See the spouse and civil partner transfers guide.

    Fidelity CGT questions

    Does FiscalFox support Fidelity UK files?

    Yes. FiscalFox has a built-in parser for the Fidelity UK transaction-history CSV. The file is read in your browser and is not sent to an AI parser.

    Which Fidelity file should I upload for UK capital gains tax?

    Upload the original transaction-history CSV for the taxable account, covering everything from the earliest relevant purchase to the latest disposal. It needs the Order date, Transaction type, Investments, Amount, Quantity, Reference Number and Status columns.

    How are Fidelity dealing fees and FX charges handled?

    Fidelity lists dealing fees and FX charges as separate rows. FiscalFox attaches each charge to the completed trade it belongs to on the same date, so the fee becomes part of the allowable cost or reduces the disposal proceeds.

    What happens to Fidelity stock transfers?

    A stock transfer in has no purchase cost in the file, so gains on those shares stay under review until you supply the original cost. A stock transfer out is not treated as a sale; FiscalFox treats it as a no gain, no loss transfer that you should confirm was to a spouse or civil partner.

    Ready to check the file? Open the Fidelity capital gains calculator, upload the export, and review the calculation before paying for a report.

    Official UK tax references

    This guide is checked against published GOV.UK and HMRC material. FiscalFox is a calculation tool, not personal tax advice; review unusual transactions with a qualified adviser.

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