ACH Deduction

What an ACH deduction actually is

ACH stands for Automated Clearing House, the bank network that moves money between U.S. accounts electronically. When you sign a merchant cash advance or short-term financing agreement, you almost always sign an ACH authorization alongside it. That authorization lets the provider reach into your business checking account and pull a set dollar amount on a set schedule without asking you again each time.

Two parts of that sentence matter more than anything else on this page: a set dollar amount, and without asking you again. The debit is fixed the day you sign, and it runs on autopilot until the balance is gone.

Fixed ACH versus a true sales split

Providers frequently price an advance as a percentage of your receivables, say 15% of daily card sales, and then collect it as a flat daily ACH. Those are not the same thing. A true split withholding arrangement takes a share of what actually came in. A fixed ACH takes the same number either way.

Watch one business across two months on a $675 daily debit, 21 business days each:

• Strong month — revenue $100,000. The ACH pulls $14,175, about 14.2% of revenue.
• Slow month — revenue $55,000. The ACH pulls the same $14,175, now about 25.8% of revenue.
• A true 15% split across those same months — $15,000, then $8,250.

In the slow month the fixed schedule takes $5,925 more than a real percentage-of-sales collection would have. That gap is not a fee and it appears nowhere in your contract. It shows up as an empty account in week three.

Why providers use it anyway

ACH is cheap, fast, and works with any bank account, which is why it dominates. Split withholding requires the provider to sit inside your card processing flow, either through a processor willing to split settlements or by moving you to a new processor entirely. That takes days, sometimes weeks, and it breaks if you switch processors mid-term. ACH takes one form.

It is also more predictable for the provider, which is precisely why it is less forgiving for you. Understanding how an MCA actually works mostly means understanding this collection mechanic rather than the headline factor rate.

What to check before you authorize it

• Get the exact dollar figure and the exact dates. "Approximately 15% of sales" is not an ACH amount. Ask for the daily or weekly debit in dollars and the first pull date in writing. Many first debits land the business day after funding, before any of the money has been put to work.
• Ask how holidays and weekends are handled. Some agreements catch up with a double debit on the next business day. If Monday is a bank holiday, Tuesday can be two payments deep before your deposits clear.
• Confirm whether the amount can ever be adjusted. This is the reconciliation question, and it is the single most valuable paragraph to read before signing.
• Read the failed-payment terms. A returned debit triggers an NSF fee from your bank and usually a second fee from the provider. Repeated returns are commonly written as an event of default.
• Never move bank accounts quietly. Changing the account so debits fail is treated very differently from asking for an adjustment, and most agreements address it directly.

Sizing the debit against real cash flow

Before accepting a daily debit, take your worst month in the past twelve, not your average, and subtract 21 days of that debit from it. If what remains cannot cover payroll, rent, and inventory, the schedule is too aggressive no matter how attractive the funding amount looks. Run the figures through the MCA calculator before you sign rather than after.

If the answer comes back tight, that is useful information rather than a dead end. A weekly schedule, a smaller advance, or a different product entirely may fit better. When you compare business loan options, ask every provider how they collect. The collection mechanic often matters more to your survival than the rate does.

Can I stop an ACH deduction through my bank?

Your bank can place a stop payment or revoke the authorization, but doing that on your own does not cancel what you owe, and it is usually written into the agreement as an event of default. If cash flow has collapsed, the safer route is to contact the provider first and ask about reconciliation or a written modification.

Is a daily ACH debit the same as a holdback?

No. A holdback rate is a percentage of sales; a daily ACH is a fixed dollar amount. Many agreements quote a holdback but collect a fixed ACH estimated from it, which is exactly why the two drift apart the moment your revenue changes.

How much should I keep in the account to be safe?

A common rule of thumb is at least one week of debits sitting untouched, plus whatever float your normal operations require. On a $675 daily debit that is roughly $3,375. The cushion exists to absorb a slow week without triggering a returned payment.