Hi there
A motion in the large chamber of parliament was approved that obliges the Federal Council to create a possibility for buying into the pillar 3a, like we can do for the 2nd pillar (Pension fund).
You can pay in every 5 years up to a maximum 34000 CHF to compensate for years where you did not pay in the maximum amount.
It’s not a law yet, but it’s worth keeping an eye on.