The range of buy-to-let products will launch on Friday 14 February including fixed rate products at both 60% and 75% LTV for 2, 3 and 5 year mortgages.
All products will be available direct or over the phone.
The lender said that this move was the next stage in its growth plans and would provide further choice to borrowers.
The Post Office confirmed last month that it hopes to be one of the ten biggest UK lenders by the end of 2014.
John Willcock, head of mortgages at Post Office said: “Post Office’s mortgage offering has gone from strength to strength since its launch. We constantly review our product range and move quickly to respond to customer demand and changes in the market.
“There has been a significant increase in the demand for buy-to-let mortgages in the last 12 months as more borrowers begin to consider the rental market.
“We are committed to offering all borrowers competitive mortgages that address their needs – whether they’re a first-time buyer, someone looking to move up the property ladder, or someone looking to take out their first buy to let mortgage.”
For an essential intermediary strategy update on the direction of the buy-to-let market this year, register for The Buy to Let Market Forum in April.
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