RateCheck

Payment Processing Fee Calculator

The headline rate is not the price. The effective rate is.

Card volume per month ($)

Transactions per month

Current rate (%)

Current per-transaction fee ($)

Current monthly fee ($)

Alternative rate (%)

Alternative per-transaction fee ($)

Alternative monthly fee ($)

Cross-border share (%)

Cross-border surcharge (%)

Cheaper plan

Current

Headline rates are not comparable on their own. The fixed per-transaction fee is what decides small-ticket businesses, and a monthly platform fee can erase a rate advantage entirely — so compare effective rate, the all-in cost divided by volume.

Annual difference: $108
Effective rate now: 3.78%
Break-even ticket: $37.50

What you entered

Card volume per month ($): 180000Transactions per month: 4200Current rate (%): 2.9Current per-transaction fee ($): 0.3Current monthly fee ($): 0Alternative rate (%): 2.5Alternative per-transaction fee ($): 0.45Alternative monthly fee ($): 99Cross-border share (%): 12Cross-border surcharge (%): 1.5

1
Average ticket
$180,000 ÷ 4,200 transactions= $42.86
2
Current plan cost
$180,000 × 2.9% + 4,200 × $0.30 + $324 cross-border= $6,804 (3.78% effective)
3
Alternative plan cost
$180,000 × 2.5% + 4,200 × $0.45 + $99 monthly + $324 cross-border= $6,813 (3.79% effective)
4
Fixed fees as a share of what you pay
4,200 × $0.30 ÷ $6,804= 19%
5
Ticket size where the two plans cost the same
($0.45 − $0.30) ÷ (2.9% − 2.5%)= $37.50
6
Annual difference
$9 × 12= $108 in favour of the current plan

Result

Cheaper plan: Current

On $180,000 across 4,200 transactions, your current plan is cheaper by $9 a month — $108 a year. Your effective rate is 3.78% versus 3.79%, and fixed per-transaction fees make up 19% of what you pay today. The two plans cost the same at a $37.50 ticket; your average is $42.86, so the lower-percentage plan wins on the variable fees above that point.

Effective processing rate by average ticket size

The headline percentage is only half the price. The fixed per-transaction fee is what makes small tickets expensive. Rows compare 2.9% + $0.30 against 2.5% + $0.15 with a $500 monthly fee, plus a 1.5% surcharge on 15% international volume.

Monthly volume	Transactions	Average ticket	Current cost	Effective rate	Alternative	Alt rate	Cheaper	Fixed fee share
$50,000	5,000	$10.00	$3,063	6.13%	$2,613	5.22%	Alternative	49.0%
$100,000	2,000	$50.00	$3,725	3.72%	$3,525	3.52%	Alternative	16.1%
$500,000	10,000	$50.00	$18,625	3.72%	$15,625	3.13%	Alternative	16.1%
$100,000	500	$200.00	$3,275	3.28%	$3,300	3.30%	Current	4.6%
$1,000,000	20,000	$50.00	$37,250	3.72%	$30,750	3.08%	Alternative	16.1%

At a $10 average ticket the fixed fee is 49% of what you pay and the effective rate is 6.13%, more than double the headline 2.9%. At a $200 ticket the monthly platform fee flips the answer and the current plan wins. Always compare on your actual ticket size, not the advertised percentage.

A payment processing fee calculator compares what two card processing arrangements will actually cost you, rather than which one advertises the lower rate. Processor pricing is built from at least three separate charges: a percentage of volume, a fixed amount per transaction, and often a monthly platform or gateway fee. Cross-border and currency-conversion surcharges sit on top for any business selling internationally. Headline comparisons almost always quote the percentage alone, which is the component that tells you least about a small-ticket business.

The number that settles the question is the effective rate: total fees for the month divided by total card volume. It folds every charge into one figure that can be compared directly across providers and tracked over time. A business processing small tickets frequently often discovers its effective rate is well above the advertised percentage, because the fixed per-transaction fee is being paid thousands of times against relatively little volume. At a forty dollar average order, a thirty cent fixed fee adds three quarters of a percentage point on its own.

That dynamic produces a crossover point, which this calculator solves for directly. Where one plan charges a lower percentage but a higher fixed fee, there is a ticket size at which the two cost exactly the same: the difference in fixed fees divided by the difference in rates. Above it, the lower-percentage plan wins; below it, the lower fixed fee does. Knowing that number turns a vague sense that one processor seems cheaper into a specific test you can apply to your own average order value, and it explains why the same processor is genuinely cheaper for one merchant and more expensive for another.

Monthly platform fees are the trap that catches otherwise careful comparisons. A plan can win clearly on both the percentage and the crossover test and still cost more, because a fixed monthly charge has to be recovered from the savings before anything is left over. At low volume that recovery never happens. The calculator applies the monthly fee to both plans so the comparison stays honest, and reports the annual difference, since a few dollars a month is easy to dismiss and the yearly figure is what actually justifies the work of switching providers.

Effective rate is the only comparable number

Divide every fee you paid last month by the card volume you processed. That single percentage absorbs rate, fixed fees, monthly charges and surcharges, and it is the only figure that can be compared across two processors or tracked honestly over time. Merchants who monitor the headline rate instead frequently miss increases that arrive through fixed fees and assessments.

Small tickets are decided by the fixed fee

On a 15 dollar order a 30 cent transaction fee is a full two percent before any percentage rate applies. On a 200 dollar order the same fee is 0.15 percent and barely registers. Average order value is therefore the first thing to establish in any processor comparison, because it determines which component of the pricing actually matters to you.

Frequently asked questions

180,000 dollars across 4,200 transactions - which plan is cheaper?

The current plan, narrowly. At 2.9 percent plus 30 cents it costs 6,804 dollars including 324 of cross-border surcharge, an effective rate of 3.78 percent. The alternative at 2.5 percent plus 45 cents comes to 6,813 with its 99 dollar monthly fee, or 3.79 percent. The difference is 9 dollars a month, 108 a year, in favour of staying put.

What is the break-even ticket size in that example?

37.50 dollars. The fixed fees differ by 15 cents and the rates by 0.4 percentage points, so 0.15 divided by 0.004 gives 37.50. Your average ticket of 42.86 sits above it, so the lower-percentage plan does win on the variable fees - by about 90 dollars a month, which the 99 dollar monthly fee then wipes out.

Why does a lower rate end up costing more?

Two reasons, and this example shows both. A lower percentage paired with a higher fixed fee only pays off above the crossover ticket size, so small-ticket merchants lose on it. Separately, a monthly platform fee has to be earned back before the plan saves anything at all - at this volume the 99 dollars a month is slightly more than the rate advantage delivers.

Should cross-border volume change the decision?

It changes the total, not usually the ranking, because most processors apply a similar surcharge and the calculator applies it to both plans. It matters when the two providers surcharge differently, which is common between a domestic acquirer and a global platform. If your international share is large, ask for the cross-border figure specifically rather than the blended rate.

How is this different from the profit margin calculator?

This prices one cost line, card acceptance, in enough detail to choose between providers. The profit margin calculator takes your total costs and tells you what is left over. Run this to establish an accurate fee figure, then feed the resulting effective rate into a margin calculation rather than a guessed percentage.