I am looking to get a mortgage with my partner, but not for him to actually live there as this will effect my tax credits?

You make a question of whether it would affect your ability to continue obtaining certain tax credits, or prevent you from being able to deduct interest from the home purchase? Sara, it seems that your second question pointed out you wanted to buy an investment property or a home as your primary property and with little down and using him as a non-occupying co-borrower you certainly could. if you end up purchasing as your primary home, you can have him on the loan and living at the property and obtain your interest deductions on your tax return.