The products will be available from Friday for first-time buy-to-let customers or those who have already entered the market.
Post Office Money managing director Owen Woodley noted that property was still an attractive investment for many.
“However, factors such as the increased Stamp Duty tax on additional properties mean people are shopping around for the best deal to keep costs down,” he said.
“We are continuing to improve our mortgage offering across the board to help customers make their buy-to-let aspirations a reality. We know that many of our buy-to-let customers will be first-time landlords and as a result, we have aimed our new market-leading deals at the cost conscious aspirational investor,” he added.
Highlights from the range include:
60% LTV three-year fixed rate at 2.28% (£995 fee)
70% LTV two-year fixed rate at 1.93% (£995 fee)
70% LTV five-year fixed rate at 2.78% (£995 fee)
75% LTV two-year fixed rate at 1.98% (£995 fee)