Your agency probably already uses ACH. Payroll runs on it. Your software vendors debit you through it. Most lenders you work with pay their own staff with it. And yet when a file closes, disbursements often go out as a paper check.
That gap is worth closing, and closing it starts with understanding what actually happens when money moves by ACH.
The Short Definition
An ACH transaction is an electronic money transfer between banks and credit unions, moving across a network called the Automated Clearing House. That is the Consumer Financial Protection Bureau’s own definition, and it is a useful one because it is precise about what ACH is: a network, not a product.
Every direct deposit paycheck, every automatic utility payment, and every recurring software subscription charge runs across that same network. In 2024 it carried more than a billion Same Day ACH payments alone.
How the Money Actually Moves
An ACH payment has four parties and one intermediary.
The originator is whoever initiates the payment, which in a disbursement scenario is your agency. Your bank, the originating depository financial institution, packages the instruction into a batch file. That batch goes to an ACH operator, either the Federal Reserve or The Clearing House. The operator sorts it and routes it to the receiving depository financial institution, which credits the receiver, your payee.
Two details matter operationally.
First, ACH is a batch system, not a real time one. Instructions accumulate and process in windows. That is why an ACH payment can be predictable without being instantaneous.
Second, ACH moves data, not paper. There is no physical instrument in the mail showing your trust account number on its face. This becomes the entire security argument later in this series.
ACH, Wire, and Check Side by Side
| Speed | Typical cost | Reversible | |
| Paper check | 5 to 7 days | $2.01 to $4.00 to issue | Stop payment only, if it has not cleared |
| Wire transfer | Same day | $20 to $50 | Effectively no |
| ACH | 1 to 3 days, or hours with Same Day ACH | $0.26 to $1.00 | Yes, under defined return conditions |
Wires are fast and final, which is exactly why wire fraud is catastrophic when it happens. Checks are slow and appear cheap to send but are actually expensive to process when you consider all the manual steps and equipment required. ACH sits in a spot that suits routine disbursement volume: fast enough, cheaper by an order of magnitude, and reversible under the network’s return rules.
That reversibility deserves a note. ACH payments can be returned, which the CFPB flags plainly. An ACH can bounce if funds are not available. In an escrow context, where you are disbursing from a funded trust account, that is a control rather than a liability. The transaction fails loudly instead of clearing quietly against money that is not there.
Same Day ACH Changed the Calculation
For years the honest objection to ACH in a real estate closing context was timing. A payment that has to reach a payee today cannot wait four days.
Same Day ACH resolved most of that. Volume passed 1.2 billion payments in 2024, up more than 45 percent year over year, and the per transaction limit now sits at $1 million. For a large share of escrow disbursements, that is a wire’s speed at a rounding error of a wire’s cost.
Same day processing still runs in windows on business days, so cutoff times govern. But “ACH is too slow for closings” is a 2015 objection, not a 2026 one.
What This Means for Your Trust Account
Most agencies run a hybrid today. Wires for the payments that must be irrevocable and immediate. Checks for everything else, largely out of habit.
That middle category, the everything else, is where the cost and the fraud exposure concentrate. Recording fees, commissions, invoices, refunds, and routine vendor payments do not need the irrevocability of a wire and do not need to processing cost of a check.
The next post in this series puts numbers on exactly what that habit costs.
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Autor:
Jim Weld
Rynoh General Manager.