But...in your scenario only your first month's instalment will achieve the full rate of interest, no? Slim
True, but you can (more or less) put as much or as little as you like in with each "instalment". And you can have as many "accounts" as you want - each cert or bond is like its own fixed term deposit account.
The problem I see with the 1 year regular saver accounts is that to maximise return you need to
-put in the max amount for the first instalment
-put in the min amount for each of the next 11 instalments
-open a new one every week, two weeks etc.
Ulster Bank have a 1000 max, 1 euro min regular saver paying 4%
EBS have a 1000 max, 100 euro min regular saver paying 5%
If I'm right the Ulster Bank one is actually the better account and has the higher interest rate assuming you switch your SO to the min amount after the first instalment. But if you do that you'll only have saved 1011 euro in one year.
If I get paid 26 times per year will Ulster Bank allow me to open 26 of these accounts? Even if they do, buying certs or bonds in the post office is surely much more convenient.