HL ISA as instant access savings

FloppyDisk

I appreciate that investments aren't savings and can go up and down. But to save me having a zillion columns on my spreadsheet with different regular savings and current accounts, or at least fewer of them, would I be barmy to chuck the vast majority of my cash savings in my HL ISA pot?
I know that I can't go over the ingoing limit for the year so can't use it as a current account but for the odd emergency where money might go back and forth it seems like it could work for me. Does anyone else use it this way or have any reason not to?

Thanks.

xylophone

would I be barmy to chuck the vast majority of my cash savings in my HL ISA pot?

At virtually zero interest? Or do you mean that you will sell investments to realise cash ( which is far from instant).

FloppyDisk

Yes I mean that, instant as in, within a month is good enough for me.

bigadaj

You'd normally match your assets to your liabilities, so typically keep at least six months spending or earnings in cash, maybe high interest current accounts and or regular savers.

Liquidating investments for emergencies may mean selling at a loss, however if you have enough for foreseeable expenditure in cash then putting the rest imto investments is what many would do.