TDS deduction liability

seema (Associate Accounts Consultant)   (122 Points)

15 January 2009  

If any Proprietor having annual income below 40 lacs in begining of financial year and not having any TAN, payments made to vendors without dedcuting any tax. If in mid of financial exceeds 40 lacs and simultaneously applies for the TAN after that on which amount tax should be deducted from vendors. Should it including past payments or liability will be only on current payments made after obtaining TAN? is any regulation exists for the same?