A good way to judge both the affordability of the housing and the cost of living is by simply calculating the maximum that a person should spend on housing in Franklin, TN, otherwise known as the debt-to-income ratio (DTI). The safest way to live in the city is to avoid spending more than 28 percent of the gross income that one earns on costs that pertain to housing and no more than 36 percent on all expenses and debts. Franklin, TN has a median income of about $108,342 for people who own homes. Based on that number, a person should spend a maximum of $2,528 on expenses related to housing. Renters have a slightly different median income, which is $52,245. Based on this average, renters should spend no more than $1,219 on all of their rental costs if they want to maintain a non-impoverished standard of living.