Merchants Instant Payments: FedNow vs ACH (Automated Clearing House), 10-Second vs 3-Day

Choose FedNow's 10-second payouts over 3-day ACH only when delay cost exceeds verified FI fees plus exception labor. Keep ACH for recurring or vendor flows. Independent technical note mirroring the canonical version: https://l0t.me/blog/merchants-instant-payments-fednow-vs-ach-automated-clearing-house-10-second-vs-3-day.php

Authors

Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-11-11
DOI
https://doi.org/10.5281/zenodo.24147229
Primary Topic
Digital Transformation in Financial Services
Type
preprint
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Merchants Instant Payments: FedNow vs ACH (Automated Clearing House), 10-Second vs 3-Day

Nathan Lawson
Zenodo (CERN European Organization for Nuclear Research)
Digital Transformation in Financial Services
preprint

Merchants Instant Payments: FedNow vs ACH (Automated Clearing House), 10-Second vs 3-Day

Nathan Lawson
preprint en

Abstract

Choose FedNow's 10-second payouts over 3-day ACH only when delay cost exceeds verified FI fees plus exception labor. Keep ACH for recurring or vendor flows. Independent technical note mirroring the canonical version: https://l0t.me/blog/merchants-instant-payments-fednow-vs-ach-automated-clearing-house-10-second-vs-3-day.php

Zenodo (CERN European Organization for Nuclear Research)
Digital Transformation in Financial Services
DOIOpen Access PDFOpenAlex
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Merchants Instant Payments: FedNow vs ACH (Automated Clearing House), 10-Second vs 3-Day — Nathan Lawson · Zenodo (CERN European Organization for Nuclear Research) (2026) | TGRS Research Map | TGRS