SoFi Technologies has transformed itself from a fintech lender into a nationally chartered bank, growing its deposit base from $1.2 billion to approximately $45.5 billion in just over four years.

From fintech to bank: the Golden Pacific pivot

The shift traces to February 2022, when SoFi completed its acquisition of Golden Pacific Bancorp, a deal that delivered a national bank charter.

Before securing the charter, SoFi funded its lending operations through securitized debt and warehouse credit facilities. Once it could offer checking and savings accounts, the company began attracting consumer deposits and deploying that capital to fund loans directly.

SoFi was not the first fintech to take this route: Varo Bank won a national charter from the Office of the Comptroller of the Currency in 2020, and LendingClub closed its acquisition of Radius Bank in 2021. Owning a bank shortens the distance between a fintech and its depositors, removing the partner-bank layer that fintechs without charters must use to gather deposits.

Deposits stood at $1.2 billion on March 31, 2022. By March 31, 2026, the figure had reached $40.2 billion, and by the end of Q2 2026 it had climbed further to approximately $45.5 billion — a roughly 33 increase over four years.

Deposits now account for 94% of SoFi's total liabilities, which stood at $42.9 billion as of Q1 2026. That ratio was just 17% four years earlier.

Why deposits matter more than they sound

The deposit franchise sits at the center of SoFi's lending model. When a company like Upstart originates a loan, it typically needs a bank partner or institutional buyer to fund it. Affirm operates similarly, relying on third-party capital sources and forward-flow agreements.

The funding mix matters because deposits generally carry a lower cost than securitized debt or warehouse lines, which is why analysts watch it closely in bank earnings. SoFi reported a net interest margin of 5.94% in Q1 2026. Net interest income grew from $252 million in 2021 to more than $2.2 billion in 2025.

The competitive gap widens

SoFi's deposit base acts as a buffer against credit market volatility, providing consistent, low-cost funding regardless of conditions in credit markets. When capital markets tighten, companies dependent on third-party funding face a squeeze: securitization spreads widen, warehouse lenders pull back, and origination volumes can dry up.

The model also gives SoFi more flexibility in managing its loan portfolio. It can hold loans on its balance sheet when the economics favor doing so, or sell them when premiums are attractive — optionality that asset-light fintechs such as Upstart and Affirm do not have.

For anyone tracking how the story develops, the gauges are routine rather than dramatic: quarterly deposit balances and net interest margin in SoFi's filings, and the pace at which other chartered fintechs build out their own deposit bases.