Arc Testnet · Chain 5042002 · Estimate vs actual

Does the gas estimate tell the truth?

Every wallet quotes a fee before you sign, and almost nobody checks it afterwards. This sends a transaction, records what eth_estimateGas promised, then compares it against what the receipt says was actually consumed — sample by sample, until a pattern shows up.

not connected balance —

Why this number matters more on Arc. Where gas is a separate volatile token, a bad estimate is an annoyance you absorb. Where gas is USDC, the estimate is a line item in the same currency as the payment — so an estimator that consistently overshoots is quietly overcharging every invoice, payroll run and subscription built on top of it. That makes estimator accuracy a product concern rather than a curiosity, and it is cheap to measure.

Samples

transactions measured

Mean overshoot

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estimate vs actual

Worst case

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largest single gap

Overpaid

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USDC held unnecessarily

Run a sample

estimate → send → compare

Recipient

Amount (USDC)

Samples

newest first

#	Estimated	Used	Gap	Fee	Tx
No samples yet.

Sending to yourself is fine — only gas leaves the account, which is the thing being measured.