It might not be as bad as it appears at first glance?
As we can see the An Post: 30 Day Notice account is subject to normal DIRT and can be beaten if you shop around.
As regards the savings cert, no doubt it is an interesting situation but probably more a culmination of multiple factors more than any intention of competition.
-Think these rates are still lower then those Ireland is paying right now especially with our 2 credit rating downgrades.
-The move from boom to burst, not sure how fast AnPost cycles through issues but it's probably fair to say the current issues became available when interest rates were much higher. I'm pretty sure I saw these issues available at least late last year which were the high days of ~5.1% for interest rates. So it was a much more level playing field back then, especially with the lower DIRT rate.
-Obviously with the slew of other tax hikes to stem the deficit, AnPost Saving certs were hardly in mind when they increased the DIRT twice.
As regards the effect it has on distribution of retail deposits:
-3 to 5.5 years is a rather long term to lock savings away for, especially since Irish savers average at €13,400 (
http://www.halifax.ie/index.jsp?p=109&n=770&a=11069) I doubt most people are happy to lock whatever savings they have away for that long... i.e. its a vertical customer base.
-The ECB rate is at its low point, so it should go up slowly as we recover (well not us persay but the EuroZone). Whether or not it'll give the edge back to retail deposits remains to be seen (especially if DIRT remains at its current rate).
Banks do have an option to at least partially contest for smaller amounts in An Post saving certs... STA accounts? These were available in 2007 / 2008 offering people the option to earn up to ~600 DIRT free depending on the term length (at 1 point AIB was offering a 5 year STA variable rate @5% = 6% return). The big 'but' with them was the rate was variable and locking cash away that long with a variable rate was hardly something to do lightly. Is the variable rate intrinsic to STA accounts or could banks make them fixed if they choose to?