The phrase "subsidised rate" means that something is being provided at a lower cost or with financial assistance from the government or another organization. Full definition
But this is not enough to cover the costs of borrowing # 11,000 or more at anything other than a heavily subsidised rate of interest of around 2 %, at today's energy prices. (climate-resistance.org)
Edinburgh Sculpture Workshop's Reach Scotland Programme enables artists living and working outside Edinburgh to benefit from a period of research or production, with studio and accommodation, access to workspaces and training all offered at subsidised rates. (edinburghsculpture.org)
Most clubs will offer subsidised rates for juniors, students and social members. (bbc.co.uk)