The bank says it will reserve a minimum of £250m in funding for those with a 15% or 10% deposit by the end of this year.
It has also launched a number of 85% and 90% LTV mortgage products, all of which are fee free.
At 90% LTV, HSBC is introducing a lifetime tracker at 4.09% above base rate, a two-year fix at 4.49% and a five-year fix at 4.89%.
And at 85% LTV, it is launching a lifetime tracker at 3.49% above base rate, a two-year fix at 4.29% and a five-year fix at 4.69%.
HSBC says it provided a mortgage to one in eight first-time buyers in 2011 and the amount it has lent to those with a 10-15% deposit so far this year is already double what it lent in 2010.
Peter Dockar, head of mortgages at HSBC, says: “In 2011 we have continued to offer very competitive rates and great advice to those with a relatively small deposit which has helped us to increase the amount we have lent to first-time buyers.
“Today’s announcement of fee free rates and a pledge to make a further £250m available to first-time buyers in 2011 shows HSBC’s commitment to continuing to help people get on the housing ladder.”