What Is veSCA? Scallop's Vote-Escrowed SCA Explained

veSCA is vote-escrowed SCA, the locked form of Scallop's governance token on Sui. You lock SCA for anywhere from one day to four years and receive veSCA in return. The longer the lock, the more veSCA you get, and the balance shrinks steadily until the lock ends and your SCA is released. Holding veSCA boosts the SCA incentives you earn when you borrow on Scallop, by up to 4x, and it qualifies you for Scallop's loyalty rewards and, as they roll out, governance votes.

This guide explains the formula, how the borrow boost works, what veSCA costs you in flexibility, and how JewelSwap uses its own protocol-level veSCA position to boost the rewards in its Scallop farms.

What is veSCA?

Scallop is a lending protocol on Sui. Its token, SCA, has a fixed maximum supply of 250,000,000, and 45% of that supply is allocated to liquidity mining, according to Scallop's token docs. Most of that liquidity mining is paid out as incentives to lenders and borrowers.

veSCA is the "vote-escrow" layer on top. The design comes from Curve's veCRV: instead of rewarding anyone who holds the token, the protocol gives extra rights to people who commit to holding it for a long time. On Scallop, those rights are listed in the veSCA documentation as:

• a boost on borrow incentive rewards
• a loyalty programme that shares buybacks with veSCA holders
• referral and tiered fee-discount benefits
• governance and voting power, which the docs still mark as "coming soon"

In simple terms, veSCA turns SCA from a token you can sell at any time into a time-locked position that earns more from the protocol.

How veSCA works: lock, receive, decay

Scallop's formula is short:

veSCA = SCA × (remaining lock period ÷ 4 years)

So 1,000 SCA locked for the full four years gives 1,000 veSCA on day one. The same 1,000 SCA locked for one year gives 250 veSCA. Because the formula uses the remaining lock period, your veSCA falls in a straight line every day and reaches zero on the unlock date. At that point you can withdraw 100% of the SCA you locked.

The lock rules, from the Scallop docs:

• Locks run in daily "rounds" that end at 12:00 AM UTC. The minimum is one full round and the maximum is 1,460 rounds, which is four years.
• You can extend a lock, which recalculates your veSCA upwards. You can't shorten one.
• You can add more SCA to an existing lock. That also refreshes your veSCA balance.
• The docs describe no early exit. Plan on the SCA staying locked until the date you chose.

That last point is the real cost of veSCA. Locked SCA can't be sold while the price moves, and a four-year lock on a volatile token is a large commitment. Only lock what you are comfortable not touching for the whole period.

A worked example: JewelSwap's own lock

JewelSwap's Sui protocol holds a veSCA position of about 44,440 SCA locked until 7 May 2029. On 28 September 2026 that lock has about 952 days left out of a possible 1,460. Using Scallop's formula, it currently counts as roughly 44,440 × 952 ÷ 1,460 ≈ 29,000 veSCA. Left alone, it will fall by about 30 veSCA a day until it reaches zero in May 2029. Extending the lock is the only way to push that figure back up.

The borrow boost: how "up to 4x" is calculated

Scallop pays SCA (and at times other tokens) as incentives to borrowers on selected markets. Holding veSCA multiplies your share of those incentives. Scallop's veSCA boosted borrowing guide describes the boost as ranging from 1x to 4x.

The boost isn't a fixed multiplier you unlock by holding a set number of veSCA. It depends on two ratios:

1. your share of all borrowing in that incentive pool, and
2. your share of all veSCA in existence.

The more you borrow, the more veSCA you need to keep the maximum boost. If your borrowing grows while your veSCA stays flat, or decays, your boost falls. The veSCA docs make the same point about deposit incentives, with a table showing that a larger position needs more veSCA to hold the same APR.

The effect on returns is simple multiplication:

Earned incentive APR = pool incentive APR × your boost

A pool paying a 5% incentive APR pays 5% with no boost and up to 20% at the full 4x.

How the boost looks on-chain

If you inspect a Scallop incentive account directly, the boost isn't stored as "1x to 4x". Each position has a weighted amount compared with its borrowed amount, and that ratio runs from 0.25 (no veSCA) to 1.0 (the cap). 1.0 divided by 0.25 is the same 4x. So an on-chain reading of 1.0 means "fully boosted", not "no boost".

The weighting is only recalculated when the account is touched. The docs note that a displayed boost can be stale until you borrow, supply, repay, stake SCA or extend your lock, and Scallop's app has a "Refresh Boost" button for that reason.

Loyalty rewards and revenue sharing

Beyond the boost, Scallop has used veSCA to share protocol revenue. When it passed $5 million in total revenue, Scallop announced a distribution of $200,000 worth of sSCA to veSCA holders with at least 2,500 veSCA, following similar rounds at the $3M and $4M milestones, according to a May 2025 press release. The same release said more than 34 million SCA was locked, with an average lock of 3.72 years.

Those are one-off, milestone-based rewards rather than a steady yield. Treat them as a possible bonus, not something to price into a decision to lock.

Is locking SCA for veSCA worth it?

It depends almost entirely on whether you borrow on Scallop, and how much.

• You borrow on Scallop at size. This is who veSCA is built for. On incentive-heavy markets, the boost can be the difference between a position that pays and one that doesn't.
• You only supply, or you borrow a little. The boost is worth less to you, and you carry the lock-up risk anyway.
• You want governance. Voting is still listed as upcoming in the docs, so it isn't a reason on its own today.

Three risks apply whichever group you're in. SCA's price can fall while you can't sell. Incentive programmes change, and a boost on a smaller incentive is worth less. And your boost decays with your lock unless you keep extending it.

How JewelSwap uses veSCA

JewelSwap runs leveraged Scallop farms on Sui. Each farm deposits your collateral, borrows against it at Scallop's 65% collateral weight and supplies the borrowed asset back into Scallop. That builds a 2.86x position. Much of the return comes from Scallop's borrow incentives, which is exactly the part veSCA multiplies.

Rather than asking every depositor to lock SCA for years, JewelSwap holds the veSCA position at the protocol level (the ~44,440 SCA lock described above) and subscribes the farms to it. The farm contracts restake positions with that veSCA key each time they compound, and JewelSwap's backend runs that compound every 4 hours, harvesting rewards and reinvesting them.

One detail is worth knowing before you deposit. Any deposit or withdrawal restakes the farm's position without the veSCA key, which drops the boost to the 0.25 floor. The next scheduled compound restores it to the 1.0 cap. In practice, a position can run unboosted for up to about four hours after someone enters or exits. Over a holding period of weeks this is a small effect, but it's real, and it's why a snapshot of the boost taken right after a deposit can look low.

On 26 September 2026 the live app showed these Total Net APYs at 2.86x leverage. Both are variable and move with borrow rates and Scallop's incentive programme:

Leverage cuts both ways. If borrow costs rise or incentives shrink, the net can fall quickly, and leveraged positions carry liquidation risk. The Scallop farming docs cover the mechanics and risks.

Where JWLSCA fits

JWLSCA is JewelSwap's liquid token for SCA. You mint it 1:1 with SCA, and JewelSwap puts the SCA to work as veSCA. Staking JWLSCA pays rewards in JWLSCA on a 7-day epoch. JWLSCA is an unredeemable derivative: you can't turn it back into SCA through JewelSwap, only swap it on the market, where the rate varies. It is a way to get exposure to veSCA-style rewards without a personal multi-year lock, but its exit depends on market liquidity rather than an unlock date.

veSCA and other vote-escrow tokens on Sui

veSCA isn't the only lock-for-rewards design on Sui. Cetus uses xCETUS, an escrowed token that boosts rewards and carries its own redemption schedule, covered in our Cetus Protocol explainer. Momentum runs a full ve(3,3) model where lockers vote emissions to pools, which our Sui DEX comparison covers. For how vote-escrow and bribes shape staking yields more broadly, see who actually pays your staking yield.

Frequently asked questions

What does veSCA stand for?

Vote-escrowed SCA. You get it by locking Scallop's SCA token for between one day and four years.

How much veSCA do I get for my SCA?

veSCA = SCA × (remaining lock period ÷ 4 years). A four-year lock gives 1 veSCA per SCA at the start. Shorter locks give proportionally less, and every balance decays to zero by its unlock date.

Can I unlock veSCA early?

Scallop's documentation describes no early-unlock option. You can extend a lock or add SCA to it, but not shorten it. Your SCA is released in full when the lock ends.

What is the maximum veSCA boost on Scallop?

Up to 4x on borrow incentive rewards, according to Scallop. The boost you actually get depends on your share of total veSCA compared with your share of borrowing in the pool. On-chain it shows as a weight from 0.25 to 1.0.

Do I need veSCA to use JewelSwap's Scallop farms?

No. JewelSwap holds a protocol-level veSCA position and applies it to farm positions when it compounds, every 4 hours. Deposits and withdrawals briefly reset the boost to the floor until the next compound.

Is JWLSCA the same as veSCA?

No. JWLSCA is a token you mint 1:1 with SCA on JewelSwap. JewelSwap uses the SCA behind it for veSCA. JWLSCA can be staked and traded, but it can't be redeemed back to SCA through the protocol.

Keep reading

• Leveraged yield farming on Sui: how the Scallop farm works
• Scallop on Sui: how Sui's largest money market grew
• Best DeFi platforms on Sui in 2026
• Sui liquid staking compared
• How to stake SUI: native vs liquid staking

This article is educational and isn't financial advice. veSCA rules are from Scallop's documentation as of 28 September 2026 and may change. Farm APYs are variable, were read from the JewelSwap app on 26 September 2026, and are not guaranteed. JewelSwap holds a veSCA position and operates the Scallop farms described here.