DH and I share all our money - we have no savings and some, but not much, debt (other than mortgage). I am happy sharing all our money but my mum has always said women should have a stash of their own in case things go wrong and you need to escape (she herself had to get out of bad relationship once and had no money of her own).
I have £3000 in national savings that are in my name only and dh doesn't know about - I pay £100 in each month from the money we give each other (all our money goes into one pot and we both take an allowance, the same each, from it for personal stuff and the rest is shared).
So the money is mine and from my allowance and therefore not depriving him of anything. I just want it to sit there and be there just in case for the future. But is it wrong to have a secret stash of money and of course over the years it will grow - will be quite a significant amount in another ten years for example.
We often wish we had more cash but if I added this money to the general pot it would just get frittered away on everyday stuff.
Any thoughts welcome - am just sorting out all my personal admin and started to wonder about this.