The income tax department on Tuesday asked taxpayers to link PAN with Aadhaar by May 31 to avoid tax deduction at a higher rate. As per income tax rules, if a Permanent Account Number (PAN) is not linked with biometric Aadhaar, TDS is required to be deducted at double the applicable rate. Last month, the income tax department issued a circular stating that no action will be taken for short deduction of TDS in case the assessee links his/her PAN with Aadhaar by May 31.