Published Friday, 27 January 2012
The study, commissioned by debt charity Consumer Credit Counselling Service, said the problems are only going to get worse.
It revealed that NI has the highest level of mortgage difficulty in the UK for loans taken out in the five-year period.
Around a third of those families are now subject to payment problems - compared to one in five across the UK.
Local households were also judged to be "particularly vulnerable" to future financial shocks, with only a third of the region having a savings account.
Una Farrell from CCCS said: "There is a range of welfare benefit changes that are going to come into effect.
"Also once interest rates go up, and they will sooner or later go up, I think homeowners in particular in the province are going to struggle hugely."
The average NI household has "barely any cushion" against unforeseen financial events, and spends as much as 97% of weekly income.
Meanwhile the local demand for debt advice has rocketed by 80% between 2008 and 2010 - faster than any other UK region.