An ACH loan calculator estimates the fixed daily or weekly payment, the total amount you will repay, and the effective cost of a revenue-based advance that debits your business bank account automatically. You enter three things — the amount you want, the quoted factor rate or fee, and the repayment term in months — and the calculator returns your recurring debit and your total payback. For example, a $50,000 advance at a 1.30 factor rate over 12 months means you repay $65,000 total, which works out to roughly $271 per business day across about 240 collection days. Because these products price with a flat factor rate rather than an annual interest rate, the calculator's real job is to translate a single number on an offer sheet into the two figures that affect your cash flow every week: what leaves your account, and what you owe in total.
Key takeaways
- ACH advances are priced with a factor rate (typically 1.10–1.50), not an interest rate — multiply the funded amount by the factor to get total payback.
- A shorter term raises your daily or weekly debit but does not lower the total owed, because the fee is fixed at signing.
- Repayment comes as either a fixed daily/weekly debit or a percentage holdback of deposits — confirm which before comparing offers.
- Approval leans on bank-deposit history and monthly revenue more than credit score; a FICO around 500+ is often workable, with a common minimum near $10,000.
- Origination fees, ACH processing charges, and NSF fees can raise your true cost beyond what the factor rate alone shows.
- Funding is frequently completed in 24–48 hours after documents are approved, though timing varies and is never guaranteed.
- Convert a factor rate to an estimated APR using the term in days to compare an advance fairly against a bank loan or line of credit.
How an ACH Loan Calculator Works
ACH financing is priced with a factor rate, not an interest rate. A factor rate is a simple multiplier — usually between 1.10 and 1.50 — applied once to the amount you receive. Multiply your funded amount by the factor rate and you get your total payback. Divide that total by the number of collection periods in your term and you get each debit. The calculator automates this so you can compare offers in seconds.
The core formulas are straightforward:
- Total payback = Amount funded × Factor rate
- Total fee (cost of capital) = Total payback − Amount funded
- Daily debit = Total payback ÷ Estimated business days in term (about 21 per month, or ~252 per year)
- Weekly debit = Total payback ÷ Number of weeks in term
Two inputs matter most. The factor rate sets your total cost, and the term sets how fast you pay it. A shorter term raises the daily debit but does not change the total owed, because the fee is fixed the moment you sign — a critical difference from a traditional loan, where paying faster saves interest. Some calculators also let you enter an origination or administrative fee, which is deducted from your funded amount up front and raises your effective cost even though it does not change the factor rate.
Fixed ACH Debit vs. Percentage Holdback
Not every ACH product debits a flat dollar amount. There are two repayment structures, and a good calculator makes clear which one you are modeling.
A fixed ACH debit pulls the same amount every business day or every week regardless of what your sales did. It is predictable, which makes budgeting easier, but it does not flex when revenue dips — a slow week costs you the same as a strong one.
A percentage holdback (common in true merchant cash advances) takes a set share of your daily deposits, so the dollar amount rises and falls with sales. This protects cash flow in a downturn but makes the payoff date a moving target: the calculator can only estimate the term from your average monthly revenue. If your deposits fall, the term stretches; if they climb, you pay off sooner. When you compare offers, confirm which structure applies, because a 'daily payment' quote assumes an average that your actual bank activity may not match.
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Reading a Realistic Payment Estimate
The table below shows how the same $50,000 advance behaves across different factor rates and terms. Every figure is for example and rounded; your real numbers depend on the specific offer and your deposit history.
| Amount funded | Factor rate | Term | Total payback | Total fee | Approx. daily debit |
|---|---|---|---|---|---|
| $50,000 | 1.20 | 18 months | $60,000 | $10,000 | ~$159 |
| $50,000 | 1.30 | 12 months | $65,000 | $15,000 | ~$271 |
| $50,000 | 1.40 | 9 months | $70,000 | $20,000 | ~$370 |
| $50,000 | 1.49 | 6 months | $74,500 | $24,500 | ~$591 |
Two patterns stand out. First, a higher factor rate raises your total cost directly — the jump from 1.20 to 1.49 adds $14,500 in fees on the same $50,000. Second, a shorter term does not reduce the fee at all; it only concentrates the same payback into fewer, larger debits. When lenders advertise a 'lower payment,' check whether they achieved it by lengthening the term rather than lowering the rate, because a longer term with a higher factor can quietly cost more.
Turning a Factor Rate Into an APR
A factor rate hides the speed of repayment, and speed is what makes short-term financing expensive. To compare an ACH advance against a bank loan or line of credit, convert the cost to an annual percentage rate (APR) that accounts for the term. A rough estimate is:
Approximate APR = (Total fee ÷ Amount funded) ÷ (Term in days ÷ 365) × 100
The shorter the term, the higher the APR for the same factor rate, because you are paying the full fee over a compressed window. The example table below shows why a '1.30 factor' can feel very different depending on how long you hold the money.
| Amount funded | Factor rate | Total fee | Term | Approx. effective APR |
|---|---|---|---|---|
| $25,000 | 1.30 | $7,500 | 6 months | ~60% |
| $25,000 | 1.30 | $7,500 | 12 months | ~30% |
| $25,000 | 1.30 | $7,500 | 18 months | ~20% |
These APR figures are illustrative estimates, not quotes. The point is directional: the same factor rate can imply a very different annualized cost. If a provider will not tell you the term in days, you cannot compute a real APR — treat that as a signal to ask more questions before signing.
What the Calculator Can't Tell You: Fees and Fine Print
A clean daily-debit number can still understate your true cost, because several charges live outside the factor-rate math. Before you trust an estimate, ask the funder to itemize:
- Origination or underwriting fee — often 1%–5% of the amount, deducted from your funded total, so you receive less than the headline figure while repaying the full payback.
- Administrative or ACH processing fees — small recurring charges that add up over hundreds of debits.
- NSF (non-sufficient funds) fees — charged each time a scheduled debit bounces because the balance was too low.
- Prepayment terms — many advances offer little or no discount for early payoff, because the fee is fixed; a few offer a modest rebate, so it is worth asking.
Because the fee is set at signing, paying a fixed-factor advance off early usually saves you nothing unless the contract specifies a rebate. That is the opposite of a term loan. If cash flow may improve and you want the option to save on interest by paying ahead, an amortizing loan may suit you better than an advance — the calculator's job is to make that trade-off visible.
Do You Qualify? What Lenders Check
Revenue-based ACH financing weighs your business's bank-deposit history and monthly revenue more heavily than your personal credit score, which is why it reaches businesses that a bank would decline. A marketplace or broker typically looks for:
- Time in business — often six months or more of operating history.
- Monthly revenue — consistent deposits that comfortably cover the proposed debit, usually starting around $10,000 or more per month.
- Bank statements — commonly the last three to six months, used to confirm cash flow and average daily balance.
- Credit — a FICO score around 500 or higher is often workable, since approval leans on revenue rather than credit alone.
Funding is frequently completed within 24 to 48 hours once documents are approved, though timing varies by provider and by how quickly you return paperwork. Approval and terms are never guaranteed — they depend on your actual bank activity and the underwriting of the specific funder. Working through a revenue-based marketplace, rather than a single lender, lets multiple funders review the same file so you can compare factor rates and terms instead of accepting the first offer.
When an ACH Advance Fits — and When to Pause
An ACH advance can be a sound choice when you have steady daily or weekly deposits, a clear short-term use for the money, and a return that outpaces the cost. Common good-fit scenarios include buying inventory ahead of a busy season, covering a bridge until a receivable clears, or funding a repair that keeps revenue flowing.
It is worth pausing when the daily debit would strain an already-thin balance, when your revenue is seasonal or unpredictable, or when you are tempted to stack a new advance on top of an existing one. Stacking multiplies daily debits against the same deposits and is a frequent path to a cash-flow spiral. If you already carry an advance, model the combined daily total against your slowest recent week before adding another. And if a bounced debit is a real risk, remember that repeated NSF events can trigger fees, damage your funder relationship, and in some contracts constitute default. Run the calculator against a conservative revenue estimate, not your best month, so the payment you accept is one a slow week can still absorb.
Frequently asked questions
What is an ACH loan calculator?
It is a tool that estimates your recurring payment and total cost on a revenue-based advance repaid through automatic bank debits. You enter the amount, the factor rate or fee, and the term, and it returns your daily or weekly debit plus the total you will repay. It turns a single factor-rate number into the cash-flow figures you actually plan around.
How is an ACH loan payment calculated?
Multiply the amount funded by the factor rate to get your total payback, then divide that total by the number of collection periods in your term. For example, $40,000 at a 1.25 factor is $50,000 total; over about 240 business days that is roughly $208 per day. The fee is fixed at signing, so a shorter term raises the debit but does not lower the total owed.
What is a factor rate and how does it differ from interest?
A factor rate is a flat multiplier — typically 1.10 to 1.50 — applied once to the amount you receive, so a 1.30 factor on $20,000 means $26,000 back regardless of how fast you repay. Interest, by contrast, accrues over time, so paying a traditional loan early saves money. With a fixed factor rate, early payoff usually saves nothing unless the contract offers a rebate.
How do I convert a factor rate to an APR?
Divide the total fee by the amount funded to get the cost percentage, then annualize it by dividing by the term in days over 365. The same factor rate produces a much higher APR over a short term than a long one, because you repay the full fee in less time. Ask the funder for the term in days so you can make a real apples-to-apples comparison.
What do lenders require to approve ACH financing?
Approval leans on bank-deposit history and monthly revenue more than on credit score. Funders commonly look for at least several months in business, consistent monthly deposits often starting around $10,000, three to six months of bank statements, and a FICO score of roughly 500 or higher. Terms are never guaranteed and depend on your specific bank activity and the funder's underwriting.
How fast can ACH financing be funded?
Funding is often completed within 24 to 48 hours after your documents are approved, because underwriting relies on bank statements that verify quickly rather than a lengthy credit process. Actual timing depends on the provider and how promptly you return paperwork, so treat 24 to 48 hours as a common range rather than a promise.
Does paying off an ACH advance early save money?
Usually not. Because the fee is a fixed factor applied at signing, the total owed does not shrink when you pay ahead unless the contract specifically includes an early-payoff discount or rebate. Always ask whether prepayment savings exist before you sign, and if the ability to save by paying early matters to you, consider an amortizing loan instead.
What happens if a scheduled ACH debit bounces?
If your balance is too low to cover a debit, the payment returns as non-sufficient funds, and you may be charged an NSF fee by both your bank and the funder. Repeated bounces can strain the relationship and, under some contracts, count as a default. To avoid this, model your payment against a slow week rather than your best month, and keep a buffer in the account tied to the debit.
