Lump Sum Payments in Arrears Tax Offset 2025 Calculator

Calculating the Lump Sum Payment in Arrears Offset (the LSPIA) has recently become a very difficult process. None of the software programs we know of calculate this  amount automatically meaning the tax estimate you give your client is often incorrect. 

Also, the Australian Taxation Office (ATO) has a knack of not calculating and allowing the offset even when you present them with all of the information necessary to calculate it! This means you need to waste valuable time objecting against your client's Notice of Assessment and even then, are you really sure the offset it correct?

The calculator gives you a lot more certainty as to the correct amount the ATO should eventually calculate and allow. By entering just a handful of data needed, this calculator will do the rest and save you an enormous amount of time.