Borrow at near-Treasury rates

Calculate your box spread borrowing rate and compare to alternatives

How much do you want to borrow?

For how long?

Your brokerage

Your estimated rate

4.30%

After-tax effective: ~3.05%

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Margin Loan

11.3%

+7.0% more

HELOC

7.5%

+3.2% more

Box Spread

4.3%

Best rate

Step-by-step instructions for your brokerage. No account needed.