SparkLend raises wBTC cap to 30,000 for BTC lending

SparkLend raised its Wrapped Bitcoin (wBTC) deposit cap from 3,000 to 30,000 wBTC, effective May 11, 2026. The protocol implemented an automated cap mechanism that increases the limit by 500 wBTC every 12 hours.

The platform reached the initial 3,000 wBTC ceiling soon after listing wBTC on March 31, 2026. At 500 wBTC per 12-hour interval, the cap expands by 1,000 wBTC per day and will reach the full 30,000 wBTC limit in roughly 27 days.

SparkLend is a decentralized finance lending protocol operating within the MakerDAO ecosystem. Its total value locked was about $3.55 billion as of May 2026, with TVL reported near $3.6 billion in April 2026.

The protocol accepts multiple tokenized Bitcoin assets, including wBTC, cbBTC and LBTC, providing several on-ramps for Bitcoin liquidity across chains.

For users, the expanded cap reduces deposit restrictions that prevented new wBTC deposits once the 3,000 limit was reached. The incremental automator provides a predictable schedule for capacity increases rather than a single, immediate jump.

There are risks tied to larger concentrations of tokenized Bitcoin. A sharp fall in BTC prices can trigger liquidations of wBTC-backed loans, which may put downward pressure on markets and prompt further liquidations. Wrapped Bitcoin depends on custodial arrangements to maintain a 1:1 peg with on-chain BTC; custodial failures, regulatory actions affecting custodians, or smart contract exploits could affect the peg and cause losses for protocols holding large wBTC positions. Accepting cbBTC and LBTC offers token diversification but does not remove counterparty or market risks.

The cap increase reflects ongoing integration of Bitcoin liquidity into Ethereum-based lending markets, allowing Bitcoin holders to use tokenized BTC as collateral for borrowing on on-chain lending platforms.