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HELP CENTER Trading Journal

UK Tax Calculator for traders

How the tax calculator works

Important informations

Important – Estimated Tax Calculation

This calculator provides an estimate for guidance purposes only. It is not a substitute for professional tax advice or an official HMRC tax calculation.

Your actual tax liability may differ, particularly if you:

  • Have multiple employments, unusual National Insurance arrangements or other sources of income.
  • Receive pension income, taxable benefits, foreign income or foreign tax credits.
  • Make pension contributions, Gift Aid donations or claim other tax reliefs.
  • Have unused losses, brought-forward losses or other allowable deductions.
  • Are eligible for special tax allowances or reliefs not included in this calculator.
  • Have complex self-employment, partnership or property income.
  • Have a funded trading arrangement whose tax treatment differs from the income classification selected.
  • Have already used the Trading Allowance against other qualifying income.
  • Are subject to special Capital Gains Tax rules or reliefs.

The calculation is based on the information you provide and the tax rules and rates currently incorporated into the calculator. It does not account for every individual circumstance.

For an accurate assessment of your tax position, please consult a qualified UK tax adviser or accountant.

Which cases are not calculated by Pillinger Works?

Unfortunately, a trading log tax calculator assistant cannot replace professional expertise. For this reason, we have not attempted to build an algorithm that covers every other possible edge case.

AreaWhat the calculator might not handle
EmploymentMultiple employers, special NI (National Insurance) categories
PensionsComplex pension income and tax reliefs
Foreign IncomeForeign-sourced income, double taxation
TradingCarrying forward losses, specific deductions
Funded AccountsUnique contractual and tax classification
Trading AllowanceThe £1,000 allowance if already utilized against other income
CGT (Capital Gains Tax)Special exemptions, reliefs, and loss offsets
Other Reliefs / AllowancesGift Aid, pension relief, Marriage Allowance, etc.

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