# Transactions & Fees Content type: Topic Hub Related resources: - Base Fee (Glossary Term): https://theblockchainlibrary.com/glossary/base-fee - Fixed-Cost Transaction Model (Glossary Term): https://theblockchainlibrary.com/glossary/fixed-cost-transaction-model - Flat-Rate Gas (Glossary Term): https://theblockchainlibrary.com/glossary/flat-rate-gas - Gas Limit (Glossary Term): https://theblockchainlibrary.com/glossary/gas-limit - Gas Price (Glossary Term): https://theblockchainlibrary.com/glossary/gas-price
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Transactions & Fees

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6 Glossary Terms
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Key Glossary Terms

Essential vocabulary for this topic

Base Fee

intermediate

The protocol-determined minimum fee component under fee-market designs such as Ethereum's EIP-1559.

Fixed-Cost Transaction Model

advanced

A fee model designed to make transaction costs fixed or highly predictable rather than continuously auctioned.

Flat-Rate Gas

advanced

A gas-pricing approach where transaction cost follows a fixed or standardized pricing model instead of a continuously auctioned market.

Gas Limit

beginner

The maximum amount of gas a transaction is permitted to consume before execution stops.

Gas Price

beginner

The amount paid per unit of computational gas consumed by a blockchain transaction.

Priority Fee

intermediate

An optional fee component paid to a block producer or validator to encourage transaction inclusion.