Advisers need to understand how lenders offering such deals work and the whole raft of different lending criteria in this part of the market to decide what sort of loan would best suit their client.

This guide will explain the information required by lenders offering multiple buy-to-let deals, what advisers need to do to secure the best deal for their client and the tax implications of building a portfolio of properties.

Contributors to the guide are Christine Newell, partnership manager of Paradigm Mortgage Services; Brad Fordham, managing director of Santander for Intermediaries; Steve Olejnik, sales director of Sevenoaks-based broker Mortgages for Business; and Ray Boulger, senior technical manager for John Charcol.