Swap vs Unstake: Which Is the Cheaper Way to Exit Your SOL LST?

TLDR

• Swapping, instant unstaking, and delayed unstaking all cost roughly the same for small orders. As volumes scale, price difference can start to appear.
• Delayed unstaking is much cheaper with lower price impacts at scale, but it comes with consistent fees that are higher than instant unstaking and swapping.
• Sanctum supports LST swap, instant unstake, and delayed unstake across 1,300+ LSTs from a single interface.

When you "exit" an LST, the first question is what you want to end up with. Unstaking converts your LST back to native SOL. Swapping provides more flexibility, enabling you to move into a different LST or cryptocurrency.

Reasons to exit an LST can include wanting to get into a higher-performing one, like INF, taking advantage of a market dip in another token, taking profit on earned gains, etc.

There are three ways to exit a Solana LST position: swap, instant unstake, and delayed unstake.

Swapping via Sanctum trades your LST for a different LST through the Sanctum Infinity Pool. On Sanctum, this is LST-to-LST only; you cannot swap directly to SOL. Other platforms like Jupiter treat LST-to-SOL as a generic swap, but on Sanctum, getting SOL means unstaking. Swaps settle in seconds and fees are included in the rate you receive.

Instant unstaking on Sanctum converts your LST back to native SOL using the protocol's reserve pool. The LST protocol burns your tokens and gives you SOL from its reserves. This also completes in one transaction, typically within seconds of confirmation.

Delayed unstaking on Sanctum queues your LST for conversion during the next epoch boundary when the protocol can actually unstake from validators. Your LST gets burned immediately, but you receive a ticket that becomes redeemable for SOL after the waiting period. The delay ranges from a few hours to 3-4 days depending on when you submit relative to epoch timing.

Swapping and instant unstaking both settle in seconds. Delayed unstaking guarantees you'll receive SOL at the LST's current exchange rate (minus the 0.1% fee), but you wait 2-3 days for the epoch to close.

Each option draws from a different liquidity source. Swapping routes through the Sanctum Infinity Pool. For instant unstaking, small orders route through Jupiter and larger orders route through the Sanctum Router. Delayed unstaking redeems against the underlying staked SOL directly, making it the most predictable option regardless of order size.

Every exit has two cost components: the fee charged for the transaction, and the price impact. Price impact refers to how much the market price moves against you as you transact.

For these examples, we'll use specific Sanctum examples and infrastructure.

Small transactions, both swapping and instant unstaking, route through Jupiter with no fee. Price impact is the only cost, and it is minimal at small sizes.

With larger transactions, routing changes. Swaps move through the Sanctum Infinity Pool, and Instant unstakes move through the Sanctum Router. Given larger transactions take more liquidity to fulfill, each of these liquidity sources charges a fee. Sanctum offers INF as an LST that provides overall liquidity. Given INF has deeper liquidity than most LSTs swapping into INF keeps both fee and price impact lower than swapping into other LSTs.

Delayed unstake sits outside dynamic pricing entirely. The 0.1% fee is fixed regardless of size, and price impact is minimal because you are redeeming against the underlying staked SOL rather than trading through a pool. Total cost is predictable, roughly 0.1% fee plus minimal price impact, at any order size.

Opportunity cost is the other factor for delayed unstaking. Locking capital for 2-3 days means forgoing yield or flexibility. At ~7% APY, that is roughly 0.04-0.06% in foregone rewards.

The fee structure below reflects how Sanctum routes and prices each exit method. The same general principles apply across liquid staking platforms, but the specific routing logic (Jupiter for small orders, the Sanctum Infinity Pool for swaps, and the Sanctum Router for larger instant unstakes) is how it works at Sanctum.

All costs are included in the rate you receive. The table below shows the typical cost structure for each option.

For small orders, swapping and instant unstaking both route through Jupiter with no fee; price impact is the only cost. For large orders, swapping via the Infinity Pool is cheaper than instant unstaking via the Sanctum Router. Delayed unstake is the most predictable option at any size with a fixed 0.1% fee plus minimal price impact.

The numbers below are from a live test on JupSOL instant unstake at release. Actual price impact varies by LST and market conditions, but the pattern holds across most liquid staking tokens.

At 500 JupSOL, instant unstake price impact is ~0.12%, nearly identical to the delayed unstake fee of 0.1%. At this size, the difference is negligible. Pick based on whether you need SOL now or can wait 2-3 days.

At 5,000 JupSOL, instant unstake price impact rises to ~0.30%. Delayed unstake still costs exactly 0.1%. The gap is small but tangible. Delayed unstake saves roughly 0.2% on a position this size.

At 50,000 JupSOL, instant unstake hits ~0.99% price impact versus a flat 0.1% for delayed. That's roughly 445 JupSOL in extra cost. The 2-3 day wait is clearly worth it at this size.

At 500,000 JupSOL, instant unstake price impact reaches ~7.26%. This is a significant cost versus the fixed 0.1% delayed unstake fee. For large exits, delayed unstake is the clear choice.

Want a different LST? Use swap. The Sanctum Infinity Pool handles LST-to-LST conversions instantly. You stay in liquid staking without an unnecessary round-trip through SOL. If INF works for you, it's the cheapest swap destination and carries the highest yield. Deeper liquidity means lower fees and lower price impact than swapping into other LSTs. Head to app.sanctum.so and swap directly.

Want SOL, small order? Use instant unstake. Small orders route through Jupiter with no fee; price impact is the only cost, typically around 0.1%. You get SOL in seconds.

Want SOL, large order? Use delayed unstake. Once your order is large enough to route through the Sanctum Router, instant unstake fees and price impact add up fast. Delayed unstake stays at a fixed 0.1% fee plus minimal price impact regardless of how much you're moving.

Need partial liquidity now on a large position? Split it. Instant unstake what you need immediately, delayed unstake the rest. You get some SOL now and minimize total cost on the remainder.

Two factors can increase your exit costs beyond expectations.

Instant unstake costs scale with order size. Small orders route through Jupiter with no fee; price impact is the only cost. Once an order is large enough to route through the Sanctum Router, a fee is added on top of price impact. The bigger the order, the higher the combined cost. Delayed unstaking avoids this entirely since its fee is fixed and price impact stays minimal regardless of size.

Thin liquidity makes instant unstake more expensive. Price impact grows when there is less liquidity to absorb your order. On LSTs with shallow reserves, this can spike significantly even at modest sizes. If your LST is not widely traded, delayed unstaking is the safer option. It redeems against the underlying staked SOL and bypasses liquidity pools entirely.

We handle all three at app.sanctum.so. Our unified interface lets you swap between any LSTs, instantly unstake to SOL, or queue a delayed unstake, all from the same dashboard.

Select the LST you want to exit, choose your method, and confirm.

For step-by-step instructions, see our complete unstaking guide. It covers wallet connection, transaction confirmation, and troubleshooting.

Is swapping an LST the same as unstaking? No — at least not on Sanctum. Swapping moves you from one LST to another through the Sanctum Infinity Pool, meaning you stay in liquid staking. Unstaking burns your LST and returns native SOL. On other platforms like Jupiter, LST-to-SOL may appear as a swap, but on Sanctum they are separate actions with different routing and cost structures.

When does delayed unstake beat instant? Once your order is large enough to route through the Sanctum Router rather than Jupiter. At that point, instant unstake carries both a Router fee and price impact on top. Delayed unstake stays at a fixed 0.1% fee plus minimal price impact regardless of size — no surprises.

Does order size really change the math that much? Yes — but mainly for instant unstake. At 500 JupSOL, instant and delayed unstake cost nearly the same (~0.1%). At 50,000 JupSOL, instant unstake price impact hits ~1% versus a flat 0.1% for delayed.

What happens if there's no liquidity for my LST? For LSTs with thin liquidity, instant unstake costs can spike significantly. Delayed unstaking bypasses liquidity pools entirely. It redeems against the underlying staked SOL, so it works regardless of market depth.

Where can I do all three? At app.sanctum.so. The platform supports all three methods (swap, instant unstake, and delayed unstake) across 1,300+ LSTs from a single interface.