Hi Moo
The crude way is to do the following.
a) Add the CETV of your pension to the CETV of his to arrive at the total value of the pensions (£204k).
b) Assume that you are entitled to 50% of the pensions (£102K)
c) Deduct the value of your pension from b) (£102k -£13k = £89k)
The result (£89K) is the value for
offsetting.
There are a whole series of issues with this calculation. To start with, it assumes that the CETVs are fair and reasonable valuations suitable for offsetting – they may or may not be. If either are salary related pensions they are likely to be undervalued by the CETV. If either values are adjusted in some way (underfunding/insufficiency in a salary related scheme, surrender penalties in a money purchase pension or benefiting from guaranteed annuity rates), then the CETVs could be undervaluing the pension. To look at these issues you would probably need to pay someone to do a simple report (likely cost £100-£200 + VAT). If alternative valuations are required, the minimum cost would be £100 + VAT.
It can be argued, with varying degrees of success, that where someone was a member of a scheme before they were married (or lived together), only part of the pension value should be considered for redistribution. There are all sorts of technical issues against this argument. For example, if the pension is in a salary related scheme and the member was on a relatively low salary when the couple married, the actual value of the pension at that time would have been negligible and certainly not in direct proportion to its value now.
Those arguing in favour of only counting part of the pension value often point to the law in Scotland, where it is mandatory. Under Scottish law the calculation is relatively simple the period of marriage is calculated as a percentage (or fraction) of the total period of scheme membership. In your case fifteen over twenty or 75%. So if this method is used, instead of using the whole £204k CETV in the calculation, only 75% is used (£153k). My tired calculations suggest that the answer in c) would then be £70k.
Finally, it is necessary to consider whether the full £70k should be used when offsetting or whether the value should be adjusted or “discounted” in any way. There are arguments both for and against adjusting the value for offsetting, but it is commonly done. Unfortunately, it is also often done incorrectly. Some would suggest that only 25% of the value should be used when offsetting – the argument being that this is the maximum tax-free-lump-sum that can be drawn from a pension on retirement. I have yet to find anyone who can explain to me why the other 75% of the pension, that will be paid as an income, should be totally ignored; but that does not stop the urban myth being repeated. There are objective and scientific ways of calculating an appropriate adjustment for offsetting. Such a report would typically cost £200 + VAT.
In summary, there are many ifs and buts concerning offsetting and it can be quite expensive to do it properly and fairly. I guess that is why many people resort to the crude methods – the problem is that there is a risk that one party will lose out. My biased view is that to do offsetting crudely is comparable to asking the local newsagent to put a value on your house.
I hope that this helps (and thank you for the PM prompting me to post on this question).
Peter.