— Glossary
Fiscal policy, visualized.
The difference between monetary and fiscal policy is the difference between the price of money, which is the Fed's job, and how much the government spends, which is Congress's job. Both land on you.
— US federal surplus/deficit, 2000-2025
Two surplus years, then nothing but red
— Why this matters to your mortgage
The deficit is not an abstraction. It is a bid-ask on your 30-year fixed.
When the federal government runs a deficit, the Treasury has to finance the gap. It does that by auctioning bonds. A $1.8 trillion deficit means roughly $1.8 trillion of net new Treasury supply looking for buyers. More supply at the same level of demand means lower prices, and lower bond prices mean higher yields. That is the whole mechanism. You do not need a macro model; you need a pencil.
The yield that matters most to you is the 10-year. Your 30-year fixed mortgage is priced as the 10-year Treasury plus a spread that usually runs 150 to 200 basis points. When the 10-year rises by 50 basis points because the market is digesting another Treasury refunding announcement, your mortgage rate rises with it, approximately one-for-one, with a lag of about a week.
The Fed gets blamed for high mortgage rates and the Fed does set the short end of the curve. But the long end, the end that prices your house, is set by the bond market, and the bond market is voting on the deficit in real time. See how the Fed sets rates for the short end, and how mortgage rates are set for the spread that turns a 10-year yield into your monthly payment.
— FAQ
Fiscal policy, answered.
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