Every transaction on a blockchain costs a fee. These "gas fees" (or "network fees") compensate the validators or miners who process and secure your transaction. Understanding how they work — and why they vary — lets you time transactions better and avoid overpaying.
Why Gas Fees Exist
Blockchains have finite capacity. On Ethereum, roughly 15–30 transactions per second are processed. On Solana, tens of thousands. When demand exceeds capacity, users compete for block space by offering higher fees. Validators include the highest-fee transactions first.
Without fees, validators have no economic incentive to process your transaction. With fees, they're paid for their work — and the fee market efficiently allocates scarce block space.
How Fees Work on Each Chain
Ethereum — The most complex fee model. Uses EIP-1559: a base fee (burned, not paid to validators) plus a priority fee (tip to validators). The base fee adjusts automatically based on how full recent blocks were. During network congestion, base fees spike dramatically — sometimes to $50–200 per transaction.
Base (Ethereum L2) — Dramatically cheaper than Ethereum L1 because transactions are batched and settled on Ethereum in bulk. Typical swap cost: $0.02–0.15. During Ethereum L1 congestion, Base fees also rise slightly (batch settlement costs more), but remain far cheaper than L1.
Solana — Fixed base fee of 5,000 lamports (~$0.001) per transaction signature. Solana also introduced priority fees — optional additional lamports per compute unit to get included during congestion. For most transactions, Solana fees are $0.0005–$0.005. During extreme congestion (e.g., a popular NFT mint), priority fees can rise to $0.05–0.50, but rarely more.
Why Solana Fees Are So Low
Solana achieves high throughput (50,000+ TPS theoretical, 2,000–5,000 TPS practical in 2026) through architectural choices: parallel transaction processing, a global fee market across all transactions (not per-contract), and Turbine block propagation. More throughput = less scarcity = lower fees.
The tradeoff: Solana's architecture is more complex, and the network has experienced outages during peak load historically.
How to Pay Less Gas
On Ethereum/Base:
- Use off-peak hours (weekends, late night UTC) — base fees can be 3–5x lower
- Check gas trackers (Etherscan gas tracker) before transacting
- Use L2s (Base, Arbitrum, Optimism) for everything except settlement — 10–100x cheaper
On Solana:
- Fees are already minimal — standard transactions cost fractions of a cent
- During congestion, adding a small priority fee (1,000–10,000 lamports) ensures inclusion without overpaying
- Jupiter and SovereignSwap handle priority fee estimation automatically
Gas and DeFi Strategy
Gas costs affect strategy in meaningful ways for Ethereum users:
Frequency — A $5 swap on Base that earns $0.50 in yield daily makes sense. The same swap on Ethereum L1 costs $30 in gas and takes 60 days to break even.
Rebalancing — Frequent portfolio rebalancing is viable on Solana (~$0.001/trade) and Base (~$0.05/trade). On Ethereum L1, it's practical only for large positions.
Compounding yield — Claiming and re-depositing yield on Ethereum L1 may not be worth the gas unless your position is large. On Solana, compounding weekly is cheap enough for any position size.
This is one reason SovereignSwap is built on Solana: sub-cent swap fees make the platform usable for trades of any size, not just large positions where fees are proportionally negligible.