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Official FAQ

#1 · 2026-05-16, 8:01 am

Q. Is any of my share data sent across the internet?
A. No - all processing is done within your browser.
Q. Are the results accurate?
A. They should be for most cases, however it is up to you to check them. ERI (Excess Reportable Income) is not included in the calculations. HMRC do require you to report any ERI (e.g. notional annual dividend payments) and add any ERI to the cost of the shares when making a disposal.
Q. How can i check the results?
A. Try one of the other calculators and compare the results. See the 'Other Calculators' page.