80TTA applicability

You can claim

If your Savings interest is above 10,000 then you can claim only 10000/-

If the interest is less than 10,000/- then actual interest only can be claimed and more than that .

Say if your interest is 4000/- then 80TTA deduction can be claimed for 4000/-

If your interest is 12000/- then only 10000/- can be claimed.

You can claim deduction upto 10000. If interest is less than it, claim full deduction of interest . If more than limit then only 10000 allowed.