A tax computation you can defend, line by line

Salary, dividends, crypto and company income in one computation. Your records are reconciled first, and every figure carries the legislation behind it.

No card needed. For the UK, US and Australia.

Computational tools, not personalised tax advice. Check your figures with a qualified tax professional before you file.

Capital gains computation, 2025/26

UK individual, amounts in £, illustrative

Worked capital gains tax computation for one crypto disposal, with the statute for each line. Select a section to read a plain-English summary of it.
ItemAmount (£)
Proceeds0.5 BTC sold on 14 January 202640,000.00
Allowable costNo purchase in the next 30 days, so ¼ of the £90,000 pool, fees included(22,500.00)
Gain17,500.00
Annual exempt amount(3,000.00)
Taxable gain14,500.00
Tax at 18%On £5,000.00 of basic-rate band left after income900.00
Tax at 24%On the remaining £9,500.002,280.00
Capital gains tax due3,180.00
Computed by the Fiscaliq UK engine. Assumes £32,700 of taxable income and a pool of 1.2 BTC bought for £50,000 and 0.8 BTC for £40,000, fees included. Section summaries are plain English, not the legal text.

How it works

From exchange records to a figure you can file, in order.

  1. Step 1: Import

    Connect an exchange by API key, add wallet addresses, or upload CSV files. Exports from Kraken, Binance and Coinbase are recognised automatically.

  2. Step 2: Reconcile

    Duplicates, transfers between your own accounts and missing acquisitions are found and resolved before any tax is calculated.

  3. Step 3: Compute and export

    The engine for your jurisdiction applies that tax year's rules and maps each figure to the return: SA100 and SA108, Form 1040 and 8949, or the Australian individual return.

What it computes

Each jurisdiction runs its own engine with its own reliefs, thresholds and forms, keyed to the tax year. Where something is not built yet, the table says so.

  • Crypto capital gains

    United Kingdom
    Same-day, 30-day and s.104 pool matching
    United States
    FIFO, LIFO or specific identification; short and long term
    Australia
    Losses applied first, then the 50% discount (ITAA 1997 Div 115)
  • Salary, dividends, interest and rental income

    United Kingdom
    Included, in the same annual summary as gains
    United States
    Included, in the same annual summary as gains
    Australia
    Included, in the same annual summary as gains
  • Staking, airdrops and DeFi

    United Kingdom
    Classified under HMRC guidance
    United States
    Classified under IRS guidance
    Australia
    Classified under ATO guidance
  • Company tax

    United Kingdom
    Corporation tax with marginal relief between £50,000 and £250,000
    United States
    C corporation tax at the 21% federal rate
    Australia
    Not available
  • Late filing and payment penalties

    United Kingdom
    FA 2009 Sch 55 and 56
    United States
    IRC s.6651
    Australia
    Not available
  • Tax authority letters

    United Kingdom
    HMRC letters classified, with deadlines
    United States
    IRS letters classified, with deadlines
    Australia
    ATO letters classified, with deadlines
  • Filing export

    United Kingdom
    SA100 and SA108
    United States
    Form 1040, Form 8949 and Schedule D
    Australia
    Individual tax return

Transfer between your own accounts

BTC, illustrative

An illustrative withdrawal and deposit of Bitcoin that reconciliation pairs as one transfer.
SideDate and timeAmount (BTC)
WithdrawalKraken(0.2500)
DepositYour wallet0.2497
Amount
0.0003 BTC less, within 1% for the network fee
Timing
6 h 37 m apart, inside the 72 h window for Bitcoin
Between
No trade in BTC between the two

Paired automatically. Not a disposal, so no gain is calculated on it.

Your records are reconciled before anything is calculated

Seven checks run over the ledger first. Three of them decide most of what reaches the computation:

Duplicates
A row is removed automatically only when an exchange ID or transaction hash proves two sources reported the same trade. Anything less certain is flagged for you and kept.
Transfers between your own accounts
A withdrawal and a deposit are paired on amount (within 1% for network fees), timing (48 hours, or 72 for Bitcoin) and the absence of a trade in between. Strong matches pair automatically; the rest wait for your review.
Missing acquisitions
If you dispose of more of an asset than your records show you acquired, the shortfall is flagged with the missing quantity before any tax is calculated.

Client workspaces

3 of 5 included

An illustrative firm overview with three client workspaces.
ClientStatusCGT owed
Client AUK, 2025/26Complete£3,180.00
Client BUK, 2025/26In progressn/a
Client CUK, 2024/25Not startedn/a
Illustrative. Each client's figures stay in their own workspace; Client A is the computation at the top of this page.

For accountants and firms

The Service Provider plan gives you a workspace for each client, with the same engines and the same citations.

  • Each client has a separate workspace, so figures never mix between clients.
  • Clients join through an invite link and their tax data stays in their own account.
  • Amendments you make are recorded with your written justification.
  • Client reports carry your firm's name.
  • Run calculations across clients in bulk and compare tax years side by side.
  • Five client workspaces included, then £19 a month for each additional client.

How Fiscaliq compares

Most crypto tax tools stop at capital gains. Fiscaliq computes the rest of the return around them.

  • Internal transfer detection

    Fiscaliq
    Matched on amount, timing, asset and network fee
    Typical crypto tool A
    Basic heuristic matching
    Typical crypto tool B
    Primarily manual
  • Missing cost basis

    Fiscaliq
    Flags gaps, suggests sources, offers reconstruction
    Typical crypto tool A
    Limited handling
    Typical crypto tool B
    Flags but no reconstruction
  • DeFi classification

    Fiscaliq
    LP entry and exit as disposals, rebases as income, bridges as transfers
    Typical crypto tool A
    Limited DeFi support
    Typical crypto tool B
    Partial DeFi, single jurisdiction
  • Traditional + crypto combined

    Fiscaliq
    Unified annual summary with income band interaction
    Typical crypto tool A
    Crypto only
    Typical crypto tool B
    Crypto only
  • AI advisor

    Fiscaliq
    Plain-English questions; runs the calculation and syncs the result
    Typical crypto tool A
    Not available
    Typical crypto tool B
    Not available
  • Multi-jurisdiction

    Fiscaliq
    UK, US and Australia, each with its own engine
    Typical crypto tool A
    Some jurisdictions, shallow rules
    Typical crypto tool B
    Single jurisdiction focused
  • Reconciliation before calculation

    Fiscaliq
    Seven checks run before any tax is calculated
    Typical crypto tool A
    Post-calculation review
    Typical crypto tool B
    Limited reconciliation
  • Corporate tax

    Fiscaliq
    UK corporation tax with marginal relief; US C corporation tax
    Typical crypto tool A
    Not available
    Typical crypto tool B
    Not available
  • Tax residency

    Fiscaliq
    UK statutory residence test; US substantial presence test
    Typical crypto tool A
    Not available
    Typical crypto tool B
    Not available

Based on publicly documented capabilities. Features vary by plan and jurisdiction. This is not an endorsement or criticism of any specific third-party product.

Pricing

Start free. Upgrade when you need every engine, unlimited imports and more AI advisor questions.

Free

Try the UK engine on up to 25 transactions.

£0 No card needed

Free, with no time limit

  • View dashboard (read-only)
  • Manual transaction entry (max 25)
  • Basic UK tax calculation
  • AI tax advisor: 5 questions/month

Individual

Recommended

Your full personal tax position, in every launched jurisdiction.

£24 a month

Billed £290 a year, saving £58

  • Unlimited transactions
  • UK, US and Australia engines
  • AI tax advisor: 100 questions/month
  • CSV, exchange API, and wallet import
  • Live tracking
  • Tax form generation
  • Annual summary with filing support

Service Provider

For accountants, tax agents and firms managing clients.

£83 a month

Billed £990 a year, saving £198

  • Everything in Individual
  • Client management dashboard
  • 5 client slots included
  • Additional clients: £19/mo each (billed to firm or client)
  • Client onboarding via invite link
  • Client report generation
  • Bulk CSV/API import
  • Priority AI advisor: 500 questions/month

Prices in GBP. Cancel at any time; your account moves to the Free plan and your data stays available.

See the full feature comparison

Frequently asked questions

Last updated

How is crypto taxed in the UK?

For most individuals, selling or swapping crypto is a disposal subject to Capital Gains Tax. Each disposal is matched first with same-day acquisitions, then with acquisitions in the next 30 days (TCGA 1992 s.106A), then with the section 104 pool (TCGA 1992 s.104). For 2026/27 Fiscaliq applies a £3,000 annual exempt amount and rates of 18% and 24%.

What does Fiscaliq calculate?

Fiscaliq calculates a full personal tax computation, not only crypto gains. It brings salary, dividends, interest, rental income and crypto capital gains into one annual summary, classifies staking, airdrops and DeFi activity, and computes company tax in the UK and US. Each figure carries the legislation or guidance it relies on.

Which countries does Fiscaliq support?

Fiscaliq supports the United Kingdom, the United States and Australia. Each country runs its own engine keyed to the tax year, with its own reliefs, thresholds and forms. The Free plan covers the UK engine; the Individual and Service Provider plans include all three. Other countries stay switched off until their rules are verified.

Does Fiscaliq give tax advice?

No. Fiscaliq provides computational tools, not personalised tax advice, and it is not an accountant, tax adviser or law firm. It applies published tax rules to the records you supply and shows its working line by line. Check your figures with a qualified tax professional before you file or rely on them.

How does reconciliation work?

Fiscaliq reconciles your records before any tax is calculated, running seven checks over the ledger. Duplicates are removed automatically only when an exchange ID or transaction hash proves them. Transfers between your own accounts are paired on amount, timing and fees, and disposals larger than your recorded acquisitions are flagged as missing cost basis.

Which tax forms can I export?

Fiscaliq exports figures mapped to the return for each supported country: SA100 and SA108 for UK Self Assessment, Form 1040, Form 8949 and Schedule D in the US, and the Australian individual tax return. Exports download as CSV, JSON or PDF. Fiscaliq does not file for you; you transfer the figures yourself.

Is my data private?

Yes. Fiscaliq does not sell personal data. Pages are served over HTTPS, exchange API keys are encrypted at the application layer, and exchange connections are used for read-only import. Analytics cookies stay off unless you opt in, and you can exercise access, portability and erasure rights from Settings or by emailing privacy@fiscaliq.co.

How much does Fiscaliq cost?

Fiscaliq has a Free plan covering 25 transactions on the UK engine. Individual costs £29 a month or £290 a year, with unlimited transactions and all three engines. Service Provider costs £99 a month or £990 a year, including five client workspaces, then £19 a month per extra client.

Can accountants use Fiscaliq for clients?

Yes. The Service Provider plan is built for accountants, tax agents and firms. Each client gets a separate workspace, clients join through an invite link, amendments are recorded with your written justification, and client reports carry your firm's name. Five client workspaces are included, then £19 a month for each additional client.

How do I get my transactions into Fiscaliq?

Upload CSV files, connect exchanges by API key or add wallet addresses. Exports from Kraken, Binance and Coinbase are recognised automatically. Individual allows five exchange API connections and ten wallets; the Free plan allows one CSV import and manual entry of up to 25 transactions.

Start with your own records

Create a free account, add your transactions and see the UK computation for your own disposals.