The building society says it is responding to market trends which have seen a reduction in swap rates recently.
All of the products are available both directly and via intermediaries.
Kris Brewster, head of products at Skipton, said: “There has been some downward movement in swap rates over the past couple of weeks, as the market adjusts to the prospect of Bank of England base rate remaining lower for longer than had been anticipated.
“Therefore, we've reduced the rates on a selection of residential 2-year and 3-year fixes accordingly, as we continue to ensure mortgages remain among the best value available.
“We have also taken this opportunity to cut rates on our buy-to-let product range. Our range has been performing very well in recent months and these latest products will mean we continue to have some of the lowest priced buy-to-let products available.
“These latest moves are part of our mutual commitment to providing our borrowers with value, flexibility and choice, with competitive mortgages designed to help them achieve their homeownership aspirations, whatever they might be.”