Castle Customer Reviews
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About Castle
Castle is a financial technology company that offers bitcoin-focused treasury and banking tools for businesses. Its platform combines operating cash, high-yield reserves, and bitcoin holdings so companies can earn yield on idle dollars while stacking bitcoin over time. Castle is not a bank; banking and advisory services are provided through partners. Features highlighted on the company site include zero monthly fees and minimums, same-day liquidity, automated revenue splits into bitcoin, and integrations with common business tools such as Stripe, Square, and PayPal.
Last updated: October 17, 2026
Company Details
- Website: https://savewithcastle.com/
- Founded: Est. 2021
- Headquarters: Remote
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