State Savings - Grossed Up Rates

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We have now reviewed the workings on the 'grossed up' comparable rates on the State Savings products post recent rate changes.

The below methodology provides a fairer methodology of calculating the comparable grossed up rates. The best buys have been updated to reflect this.

The following tables (A, B, C and D) show the actual return that the State is paying on each of the 3,4,5½ and 10 year fixed rate, term State Savings products. The second row and third row of each of the Tables A, B, C & D then shows the “Gross Repayment” and “Total % Return” which a competing term savings product which is subject to the new DIRT rate (41% shown on the second row coloured blue) or the new DIRT & PRSI rates (45% shown on the third row coloured salmon) must pay to achieve a “Net After Tax Repayment” which matches that of the tax free State Savings products.

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Great work, Ciaran. Thanks.

Just looking at at your calcs you are correctly grossing up the "gross" rather than the AER. AER is then calculated from the grossed up gross using a compound interest formula?

I think I made a mistake in previous calcs by grossing up the AER.
 
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