Topslicer Tool

Package cost from £100.00

Topslicer Tool


Devised and written by Tim Good to assist with accurately calculating Chargeable Event Gains and Top Slicing Relief.


Introductory Offer

Buy 5 online tokens before 31 January 2018 and you can carry out 5 top slicing calculations on your clients for just £100. The tokens can still be used after 31 January. One token allows you to do one calculation using our online Topslicer Tool.  Spend £100 now to potentially save your clients thousands.


Scroll down for more details on the Topslicer Tool and to purchase.

Product overview

The Taxpert Topslicer Tool 2016-17

The Taxpert Topslicer Tool 2016-17 gives a quick, easy and accurate way of checking the HMRC calculation of top slicing relief (TSR) on chargeable event gains.

The problem

HMRC use a simplified and outdated method to calculate top slicing relief. In many cases they undercalculate TSR by tens of thousands of pounds.

The solution

The Taxpert Topslicer Tool follows the calculation set out in s535 ITTOIA 2005 to calculate the correct amount of TSR and then compares this to the HMRC calculation. The Taxpert Topslicer Tool shows full workings which can be used to support a submission to HMRC.

Who says so?

Tim Good (founder and MD of Absolute Accounting Software Ltd) has spent over thirty years explaining complicated tax issues to tax professionals. His article setting out the theory behind the Topslicer Tool was published in Taxation magazine in September 2017 and HMRC have acknowledged that they need to consider the implications.


We are still waiting for HMRC to accept that we are right and they are wrong. In the meantime we would recommend submitting returns and amendments based on the Taxpert Topslicer Tool calculations to protect the taxpayer’s position.

What about other years?

We will provide 2015-16, 2017-18 and 2018-19 functionality in 2018.

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