Form 26QB is a challan-cum-statement form used for the payment of TDS (tax deducted at source) on the sale of immovable property in India. It is applicable when the buyer purchases any property from the seller and the consideration exceeds Rs 50 lakh. The buyer is liable to deduct TDS at 1% of the property value and deposit it to the government through Form 26QB within 30 days from the end of the month in which the tax was deducted. The buyer can also download Form 16B, which is a certificate of TDS, from the TRACES portal after 5 days of making the payment. For more details, you can visit the official websites of the Income Tax Department or TIN-NSDL. You can also read some articles that explain the process of filing Form 26QB and Form 16B. I hope this information is helpful to you.