They will calculate the interest from the 1st July to closing date at 4.5%, add it to your capital and then switch over to the 6%. I got them to put my capital -1000 into the 6% and I opened an 8% reg saver with a 1000 from my 4.5% reg saver. Personally, I think it's a bit of a sly move by Anglo but it seems as if it's up to us as investors to keep an eye on the interest rate changes! It's a good way for them to avoid paying too much interest charges out. You build up your balance and then just when you're getting up a head of steam, they pull the rug from under you and force you to start again from scratch on the high interest reg saver account