Box Rate Tracker
Live market data showing Treasury yields, SOFR, Cboe Box Rate references, and estimated executable box spread rates. Last refreshed: Apr 30, 2026.
10Y Treasury
4.36%
FRED benchmark
SOFR
3.64%
Overnight
Est. box rate
3.96%
1Y Treasury + 25 bps
Core PCE
2.97%
Inflation
Historical rate comparison
Treasury yields, SOFR, estimated box rate, and inflation
Estimated box spread term structure
Implied rates for different loan durations based on current Treasury benchmarks plus modeled execution friction
Data sources
Treasury yieldsFRED
SOFRNY Fed
Cboe Box Rate IndexCboe Global Markets
Inflation (Core PCE)BEA/FRED
Understanding the data
The Cboe Box Rate Index tracks market-implied risk-free rates from SPX box spreads.
Executable rates may differ due to bid/ask spreads, commissions, and market conditions.
BoxLoanCalc currently models estimated executable rates from Treasury benchmarks plus explicit friction.
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