Fixed and tracker rates start at 2.04% with a booking fee of £495 for homebuyers and remortgagers.
Miguel Sard, head of mortgages at Santander, said: “We are delighted to offer these exclusive deals to our existing current account customers.
“These products, together with the continued benefit of 1% cashback to our 1|2|3 Current Account holders, demonstrate our commitment to providing our customers with good value, competitively priced mortgages.”
At 70% LTV they include a 2-year tracker at 1.54% plus base rate, a 2-year fix at 2.39% and a 5-year fix at 3.29%.
Other rates are a 2-year tracker at 2.44% plus base rate and a 2-year fix at 3.19%, both at 85% LTV, while another offering is 3.85% 5-year fix at 80% LTV.