As of June 1, eligibility for a new mortgage (or renewals with a new lender) will depend on a new stress test, and specifically, whether buyers can pay their mortgage if interest rates go up to 5.25%. This will be trying for all buyers, not just first-time buyers. However, if first-time buyers can’t meet the test, the First-Time Home Buyer Incentive may come to the rescue. Tax and financial advisors need to know the details to advise on the pros and cons and do the “homebuyer’s math” to make sound recommendations.