Frequency/market practice: The Singapore Stamp Duties Act requires the buyer to bear the expense of stamp duty, unless there is an agreement to the contrary. In practice, it is also common for the buyer to bear the amount of stamp duty.
Is a separate tax covenant/indemnity or tax deed common?
Frequency/market practice: Rarely. It is more common to have a tax indemnity included in the purchase agreement. Warranty insurance coverage for tax related liabilities are increasingly being used in private equity deals.