I have been entrusted the job of calculating HBA interest of applicants. On one such case our HQ ordered to draw the cheque within 31st of one financial year and then instructed to hand over the cheque when mortgage of the house property was over. As such, the date of handing over of cheque was 2 months after its drawal. The interest was calculated from the date of handing over of cheque treating it as date of payment as required by HBA rules. Now, the Pay and Accounts office insists that the date of payment should be the date of issue of the cheque as it was the procedure followed by them. It may be mentioned that the rules of receipts and payments also indicates date of payment to be date of handing over of the cheque.