Kathleen Carpenter is facing an $18,000 bill dating back to 2003.
A clerical error meant another person was charged Carpenter’s property taxes on top of their own.
Carpenter has five years to pay the outstanding bill, but isn't sure how she can come up with an extra $300 a month on top of her regular payments.
She was laid off in November and has not found work.
The city says it can’t comment on specific cases, but adds it’s rare for unpaid taxes to go unnoticed.
“We’re down and we don’t know what to do about it. It’s going to be tough because they want us to start paying right away,” Carpenter said.