Token Extensions (Network Impact)

The aggregate effect on Solana network resources — primarily compute units and account space — introduced by Token Extensions (Token-2022), which adds on-chain extension data and additional CPI calls compared to the original SPL Token program. Tokens with multiple extensions (e.g., transfer fees + confidential transfers + interest-bearing) require significantly more compute budget per instruction, affecting transaction size, CPI depth, and priority fee calculations. Developers must account for the higher CU consumption of Token-2022 instructions when setting compute unit limits and priority fees to ensure reliable transaction landing.