A 90% LTV 5-year fix at 3.60%, and a 90% LTV 5-year fix at 3.79% have been added.
The former deal includes a £999 fee, while the latter has no fees.
The products can be applied for directly with Santander online, in branch, over the phone or via a broker.
Helen Harrison, head of intermediary distribution at Santander said: “We’re pleased to announce these new 90% LTV mortgage products and to be able to support more first-time buyers with smaller deposits on their journey towards homeownership.”
The offerings will be available from 21 January.