10-year Treasury yield 4.7%

The Committee for a Responsible Federal Budget said on May 21 that the 10-year Treasury yield hit 4.7% this week, about 55 basis points above projections from the Congressional Budget Office. In a new analysis, the group said that if rates remained that far above CBO’s assumptions across the yield curve, federal debt would rise by an additional $2.0 trillion over a decade. CRFB said debt held by the public would reach 125% of gross domestic product by 2036 under that higher-rate scenario. The group’s calculation adds a fiscal dimension to a market move that has already pushed longer-dated Treasury yields to multi-year highs. ### Why does a 4.7% 10-year yield matter for the budget? A 4.7% 10-year Treasury yield matters because Treasury borrowing costs feed directly into federal interest spending. CRFB said the yield was roughly 55 basis points above CBO’s projection, and said a similar shift across maturities would materially raise the government’s financing bill over the next 10 years. (crfb.org) CBO’s February 2026 outlook projected that 10-year Treasury yields would rise from 4.1% in 2026 to 4.4% in 2031 and beyond. CRFB’s May 21 note framed this week’s move as a gap between market rates and the baseline Congress uses to estimate deficits and debt. ### Where did the $2.0 trillion figure come from? (crfb.org) CRFB said the $2.0 trillion estimate assumes interest rates remain elevated across the yield curve, not just on the 10-year note. Under that assumption, the group said higher debt-service costs would compound over time as the Treasury refinances maturing debt and issues new securities. (crfb.org) The same CRFB analysis said debt would climb to 125% of GDP by 2036 in that scenario. That figure is lower than the 136.4% gross federal debt level cited in a House Budget Committee summary of CBO’s February 2026 baseline, in part because the measures are not identical; CRFB’s article refers to debt held by the public as a share of GDP. (crfb.org) ### What were forecasters expecting before yields rose? CBO projected in February that short-term rates would decline but remain above 3%, while 10-year Treasury yields would settle at 4.1% in 2026 and 4.4% in the early 2030s. CRFB’s article cited those assumptions directly in arguing that current market levels are running ahead of the official baseline. (crfb.org) Federal Reserve data showed the 10-year constant-maturity Treasury yield at 4.67% on May 19, the latest observation available in FRED as of May 20. That reading is consistent with CRFB’s statement that the 10-year hit 4.7% this week. ### Are longer-term Treasury rates also moving higher? CRFB said the 30-year Treasury note reached 5.2%, its highest yield in almost 19 years. (crfb.org) CNBC also reported this week that the 30-year yield had recently touched its highest level in nearly two decades before easing. Market coverage has tied the rise in long-term yields to inflation concerns and uncertainty over the path of interest rates. (fred.stlouisfed.org) CRFB’s note did not assign a single cause, but focused on the budget effect if those higher rates persist. ### What should readers watch next? CRFB’s May 21 post points back to CBO’s February 2026 budget and economic outlook as the benchmark for its comparison. (crfb.org) The next key reference point will be whether Treasury yields remain near current levels long enough to force revisions in budget projections or debt-service estimates from CBO and other fiscal analysts.