According to research from National Debtline, one in six people say they are likely to fall behind in January as a result of Christmas spending, an increase from 11 per cent last year.
Graham Cleveland director of Trinity Wealth Management Ltd and a member of Association of Christian Financial Advisors told Premier News Hour Christians should approach spending in biblical way.
"Looking at it from a biblical perspective, we should spend less than we earn," he said.
"And if we spend more than we're earning, what we're saying is that God hasn't provided enough.
"Therefore, there is a big question as Christians, if we overspend how do we go about changing that?"
He advised people to ask for the Holy Spirit's help.
"I remember in the years that [my wife and I] didn't have much money and we used to ask for God's help and God's wisdom," Cleveland added.
The survey of more than 2,000 people found more than half of people had not saved for Christmas before December arrived, with only 14 per cent starting to save up for the extra costs of Christmas before last summer.
Cleveland said now is the time to start saving for Christmas spending.
He said: "At the end of each year or the start of each year we should set a budget and part of that budget should be Christmas, so I think it's actually being wise.
"But actually implementing that and putting into practice is the difficult bit.
"Really try and make a budget. What do [you] realistically need in order to live? You put down that first and [see if] there any left over and how to allocate it."
Listen to Graham Cleveland speaking with Premier's Tola Mbakwe here:
