Ok. Just to clarify.
Special Bonus Savers a/c is what your SSIA with BOI turns into if you do nothing. The present rate on this is 4% for 3 months & thereafter the ECB rate for the next 18months. If you continue to save, anything from €20 to €1000 monthly you will earn 6% on the new savings element. This rate is promised to be at least that for 18months.
New SBSA a/c's had been restricted to people who wanted to transfer in a lump sum from a maturing SSIA in another Financial entity. You can still do this & the lumpsum you lodge will earn 4% & continuing savings from €20 - €1000 per month will earn 6% interest.
The new piece -apart from the increased rate - is that these a/c's are now open to anyone, (subject to them having a c/a as a feeder a/c & complying with the anti-moneylaundering legislation ) as a regular saver a/c.
You can save anything from €20 - €1,000 monthly (this can be done weekly or fortnightly also as long as it doesn't fall short or exceed the limits) as long as it is done by Direct Debit.
The one thing you CANNOT do with any of these a/c's is to lodge lumpsums (with the exception of the SSIA lumpsum) at any time. They have to be based on regular DD based savings exactly like the system for your SSIA.
The main difference from a lot of other regular saver a/c's is that there are no strings attached. You can withdraw at any time, you can change your DD amt up or down, you can close it at any time. You are not tied in for any timespan.
(I want to make it clear that I work for BOI & I am not plugging this but trying to clarify as there seems to be a lot of confusion)