Castle Opens Its Bitcoin Savings Stack to Individuals
Bitcoin Magazine Castle Opens Its Bitcoin Savings Stack to Individuals The Miami startup is bringing 12% STRC yield to personal accounts — and letting customers route any slice of the payout straight...
The Miami startup is bringing 12% STRC yield to personal accounts — and letting customers route any slice of the payout straight into bitcoin.
Castle, the company behind an automated bitcoin financial stack for businesses, has said it is opening its platform to individuals, bringing its high-yield product to personal accounts along with a first for the category: the option to take dividend income in bitcoin at whatever ratio the customer picks.
The yield comes from STRC, Strategy‘s perpetual preferred stock, which Castle added earlier this year and which currently pays a 12% annual dividend on a semi-monthly schedule.
Holders can take 100% of that payout in cash, 100% in bitcoin, or anything in between, according to a Tuesday statement. Most Castle customers land in the middle, the company said, covering operating expenses with cash while the remainder compounds into bitcoin automatically at every payout.
“Investors have long faced a choice between earning steady yield and holding bitcoin. Castle eliminates that trade-off,” co-founder and CTO João Almeida said. “By enabling a portion of dividend income to be automatically converted into bitcoin, so customers get both cash flow and long-term upside.”
The broader pitch is consolidation: Castle puts operating cash, fixed income, and bitcoin accumulation on one platform, cutting out the shuffle between a bank, an onramp, and a brokerage. The system is built automation-first: users define a strategy once and the platform executes it.
Until now, Castle served business entities exclusively — restaurants, gyms, churches, accounting firms, e-commerce shops, auto dealers, SaaS companies, real estate, and non-profits among them. The push into personal accounts came from those same customers.
“Feedback we heard over and over from business owners was: ‘I love this stack — when can I use it personally?'” co-founder and CEO Stephen Cole said. “Today we’re answering that. The same automated bitcoin-powered financial stack that runs their company’s balance sheet can now run their personal finances.”
Castle was founded by Cole and Almeida and is backed by Boost VC and Winklevoss Capital. More information about the company’s product can be found here.
Asanat Analysis — Why it matters
Castle's retail expansion signals growing mainstream appetite for yield-generating Bitcoin products that don't require choosing between cash flow and long-term appreciation. The 12% STRC dividend paired with flexible bitcoin conversion addresses a real friction point—operators managing business cash flow while accumulating Bitcoin exposure have typically juggled separate accounts. The automation-first design reflects broader DeFi UX maturation: yield protocols are competing on operational simplicity, not just raw APY.
The significance lies in normalization rather than novelty. Bitcoin yield products existed pre-2024, but Castle's framing—consolidating banking, trading, and Bitcoin accumulation into a single stack—mirrors traditional fintech's "everything app" thesis applied to crypto rails. This works only if yield sources remain stable; the 12% STRC dividend is preferable stock, subordinate to equity claims, introducing counterparty risk Castle doesn't emphasize. The company's B2B-to-B2C motion also suggests successful product-market fit with business owners, a less volatile user cohort than retail speculation-chasing.
Broader context: this continues 2023-2025's trend of Bitcoin shifting from pure store-of-value marketing into yield-bearing asset positioning. It challenges the 'Bitcoin doesn't produce cash flow' axiom that long held sway among traditional investors, though substituting dividend-paying equities (STRC) for native Bitcoin yield. The move targets a specific demographic—business owners with existing Castle accounts—rather than cold acquisition, reducing hype-driven adoption risk but limiting addressable market.