Vice President Joseph R. Biden Jr. refinanced his home and two home equity lines of credit in 2013, securing super-low mortgage rates that will save him thousands of dollars a year.  

Biden was generally been among the poorer senators, but his family finances appear to have improved of late, judging by a review of his financial disclosure forms.  

In 2013, he paid off a mortgage on his Delaware home with a 4.625 percent interest rate with a new, 30-year mortgage with a super-low 3.375 percent rate from TD Bank, which has a Canadian parent company.  

The mortgage is somewhere between $500,000 and $1 million, and includes a rental property. Saving 1.25 percent on $500,000 would amount to more than $6,000 in savings a year, although after-tax savings would be less because of the mortgage interest deduction.  

He also paid off two home equity lines of credit each worth more than $100,000 and took out a new home equity line of credit worth more than $250,000.  

The old home equity lines featured interest rates of 4.49 percent and a prime interest rate, respectively.  

The new home equity line features a super-low 2.75 percent interest rate and a 20-year term, also from TD Bank. That should save Biden thousands more each year.  

Biden, 71, would be more than 100 years old when the 30-year mortgage is paid off, if it isn’t paid off early.  

Obama, meanwhile, continues to pay above-market interest rates on his mortgage on his Chicago home — 5.625 percent. We noted a few years back that while Obama had urged a massive refinancing program to bolster the economy, he hadn’t yet taken advantage of low interest rates to refinance himself.    

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