Mortgage funder Resimac has caught up with almost all their competition (bar Rams) and increased interest rates. Resimac, like Challenger and First Mac, is a wholesale brand with the loans marketed through mortgage managers.Resimac on Tuesday advised managers that rates would rise by 10 basis points on new and existing prime loans; by 30 basis points on low doc loans.Unlike say, Challenger, which trimmed its risk settings pretty drastically in changes advised at the end of last week, Resimac will continue to allow customers to capitalise the cost of lenders mortgage insurance.Resimac cut the threshold at which it will pay the LMI premium on loans with deposits of 20 per cent or more to $500,000.