Downsizing and the (dreaded) RNRB

H died in 2023 and W died in 2022. Post W’s death, but prior to H’s death, the matrimonial home was sold (for £615k). H leaves an estate worth £1.3m, half of which passes to the daughter (direct descendant); he rest goes to nephews and nieces. I believe that the downsizing addition will be calculated by totalling the residential enhancement (RNRB of £175K) with the brought-forward allowance (“TRNRB” also of £175K on my facts).

As the QFRI was worth more than the sum of these, the lost residential amount (LRA) at H’s death will be the full £350K. The downsizing allowance is then equal to the LRA because the LRA is less than the 50% of the chargeable estate which is closely inherited (£600K).

A question has been raised as to whether the relief will be capped since only 50% of the residue is closely inherited. Having spent more time than is reasonable in trying to interpret the rules, I believe the answer is “no” and that this issue is only relevant when the property itself forms part of residue (so not with downsizing). As the closely-inherited portion of the estate exceeds the total maximum relief, I think I can claim the full £350K but I would welcome confirmation from others.

Also - please reassure me that I am not the only person that still finds the RNRB legislation, terminology and general situation impenetrable!

I agree with your analysis having tried to pull together IHTA 1984 ss 8FB and 8FE.

In particular, the amount of the down-sizing addition is the lower of the value assets left to lineal descendants and the lost RNRB. Thus, as you say “As the closely-inherited portion of the estate exceeds the total maximum relief, I think I can claim the full £350K”.

And, yes I find the RNRB legislation mind-blowing !!

Malcolm Finney

Thank you Malcolm for taking the time to look at this. I am glad you agree with my thinking and I am also pleased that you find this whole thing as ugly as I do.

Maybe the PM will now abolish IHT altogether, so the RNRB will go by default!

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