The higher rate on deposits that the new saving scheme offers doesn't increase funding costs for banks in anyway. The Treasury literally pays the depositors the extra yield, not the banks.
BTW, this week, the interest on private loans increased substantially, not gradually.
And, yes I know interest on loans increased substantially but that has nothing to do with the new saving product and everything to do with the meltdown in the lira that preceded.
Edit: And in any case why would banks raise loan rates if they don't have to bear the cost of the new product?
Access to TL got harder by the actions of the government. This is why interest rates increased.
And all this mind you only IF people move a substantial amount of their lira deposits to the new product AND the lira depreciates more than the rate on the underlying lira deposit account (only then are savers eligible for the kicker rate).
So far, savers have moved around 10b liras into this product, out of a total 4.3 trillion lira of deposits.
You're telling me banks raised rates because of that marginal shift? And even though, I repeat, they don't have to pay for it?