Tds on honororium paid and ta da provided to foriegn profess

Hi friends.

I got an issue, My employer is an educational institute.  Foriegn lecturer came and teach students here and went back we provided Travelling and daily allowance now we have to pay him honorarium. Now the issue is on what amount TDS is deductable and at what rate TDS is deductable... please clarify as early as possible

regards

B. Purushotham Rao