The promo rate is an additional percentage paid on top of the standard 1.25% Tagesgeld interest for your saving funds for the duration of 4 months after registration at Tide. This means you will receive:
1.25% p.a. interest credited to your Tagesgeld account as usual, and
3.25% p.a.Tide Bonus, which will also be credited to your Tide Instant Saver account within the first 7 days of the following month.