Homebuyers who can't cobble together a sizeable deposit will find lenders imposing a high interest rate. Patrick Collinson reports Here's the good news: it's easier to get a 90% mortgage today than at any time since the credit crunch began. And here's the bad news: interest rates (from 4.49%) on 90% loans are steep, and if it's a 95% loan you want, the rate can spiral to 7%, equal to 14 times ...