# ACH Articles

> Articles about ACH from Dodo Payments, including guides, insights, and best practices.

- **URL**: https://dodopayments.com/blogs/category/ach

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- [eCheck Payment Processing: How Electronic Checks Work](https://dodopayments.com/blogs/echeck-payment-processing): eCheck payment processing explained: how electronic checks run on the ACH network, SEC codes, authorization rules, timelines, fees, returns, and when to offer them.
- [How Long Does an ACH Transfer Take? Timelines Explained](https://dodopayments.com/blogs/how-long-does-ach-transfer-take): How long an ACH transfer takes: standard ACH settles in 1-2 business days, Same Day ACH in hours. Cutoff times, holidays, returns, and when funds are really final.
- [ACH Return Codes: R01-R29 Reference Guide for SaaS](https://dodopayments.com/blogs/ach-return-codes): ACH return codes explained: what R01, R02, R10 and other Nacha return reason codes mean, return timeframes, retry rules, and how SaaS merchants should respond.
- [How to Accept ACH Payments From Customers: Complete 2026 Guide](https://dodopayments.com/blogs/accept-ach-payments-from-customers): How to accept ACH payments from customers - setup process, fees, processing time, security, and when ACH is the right choice vs cards for B2B and high-ticket sales.
- [What Is ACH Payment? A Complete Guide for SaaS Founders](https://dodopayments.com/blogs/what-is-ach-payment-saas-guide): ACH payments explained for SaaS - how they work, why they cost 10x less than cards, settlement timelines, and how to accept them without your own merchant account.

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