Want to learn how to blow through $18 million? Pay attention to Tori and Dean!

During an episode of her Lifetime reality series "True Tori," the mother-of-four claimed that she was living "paycheck-to-paycheck" and worries about providing for her children and husband, Dean McDermott.

A source told E! News that Spelling and McDermott have "gone through $18 million since they've been together."

The source added that the former "Beverly Hills, 90210" actress refuses to give up her lavish lifestyle, including sending her children to expensive private schools, saying that Spelling's mother "has offered to pay for the kids' schools many times, but Tori has never accepted her offer."

"I don't want to change our lifestyle," Spelling said on her show. "That's why I work so hard. I don't want to change... Why should we have to? My dad wouldn't have wanted this."

Spelling inherited only $800,000 of her father's $600 million fortune because of irresponsible spending habits. The reality star currently employs three nannies. McDermott has suggested that his wife cut costs by getting "rid of all that stuff" she keeps in 127 storage vaults.

The actress mentioned her financial problems in her 2013 book, "The High Life", writing, "it's no mystery why I have money problems. I grew up rich beyond anyone's dreams. I never knew anything else. Even when I try to embrace a simpler lifestyle I can't seem to let go of my expensive tastes. And then there's my shopping problem. I've bought ridiculous amounts of stuff for the kids, clothing, toys, crafts."