POS Comparison Calculator
Calculate monthly POS cost including subscriptions and transaction fees.
About this calculator
A point-of-sale system's real cost is rarely just the sticker price on the hardware -- it's a recurring Monthly Subscription plus per-transaction processing fees that scale with sales volume, and this calculator adds all three together to show the true monthly and annual burden. Monthly Transaction Fees are computed per transaction: each sale is charged the Transaction Fee % of its own Avg Transaction Value plus a small Transaction Fee (flat) amount, then summed across Monthly Transactions -- which is why processing fees rise with both how often customers pay and how much they spend per visit, not just one or the other. Monthly Total Cost adds the fixed Monthly Subscription on top of that variable fee total, so a business with heavy transaction volume can end up paying far more in processing fees than in software subscription costs even though the subscription line item looks larger on paper.
First Year Total Cost folds in the one-time Hardware Cost so a business can compare the true first-year outlay of one POS system against another with different upfront pricing. Effective Processing Rate expresses total transaction fees as a percentage of total sales volume, which is the number worth comparing directly against a competing processor's quoted rate, since the flat per-transaction fee makes the effective rate on small transactions noticeably higher than on large ones. This is a straightforward fee-arithmetic model; it does not account for tiered/interchange-plus pricing structures, monthly minimums, PCI compliance fees, or chargebacks that some real POS providers layer on top of a simple percentage-plus- flat-fee structure.
Inputs
Results
Monthly Total Cost
$1,839.00
How to Use This Calculator
- Enter the monthly transaction volume and average transaction value.
- Input the monthly subscription fee, transaction fee percentage, and flat per-transaction fee.
- Add the one-time hardware cost for the POS terminal or register.
- Review the Monthly Total Cost, Annual Cost, and First Year Total Cost.
- Check the Effective Processing Rate, Cost Per Transaction, and 3-Year TCO to see your total processing costs over time.
How the result changes with Monthly Transactions
| Monthly Transactions | Monthly Total Cost |
|---|---|
| 1,000 | $959.00 |
| 1,500 | $1,399.00 |
| 3,000 | $2,719.00 |
| 5,000 | $4,479.00 |
What each input means
- Monthly Transactions
- Average number of transactions per month.
- Avg Transaction Value
- Average sale amount.
- Hardware Cost (one-time)
- One-time POS hardware cost (terminal, register).
- Monthly Subscription
- Monthly POS software subscription fee.
- Transaction Fee %
- Per-transaction percentage fee.
- Transaction Fee (flat)
- Per-transaction flat fee.
How this is calculated
Worked example, using the default values
- Identify Input Parameters6 parametersMonthly Transactions = 2000, Avg Transaction Value = 30, Hardware Cost (one-time) = 500, Monthly Subscription = 79, Transaction Fee % = 2.6, Transaction Fee (flat) = 0.1 = 6 input(s) provided
- Calculate Monthly Total CostMonthly Total Cost1839 = $1,839
- Calculate Annual CostAnnual Cost22068 = $22,068
- Calculate First Year Total CostFirst Year Total Cost22568 = $22,568
Engine last updated . Checked against 2 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
Why is Effective Processing Rate different from the Transaction Fee % I entered?
Transaction Fee % is only the percentage component of the per-transaction charge -- the flat Transaction Fee (flat) amount is added on top of every transaction regardless of its size. Because that flat fee is a bigger share of a small transaction than a large one, Effective Processing Rate (total fees divided by total volume) runs higher than the entered percentage alone, especially when Avg Transaction Value is low.
Does a lower Avg Transaction Value always mean lower total processing fees?
Not necessarily the total dollar amount -- but it does raise the Effective Processing Rate. Monthly Transaction Fees depend on both Monthly Transactions and Avg Transaction Value together, so fewer, larger transactions and many small ones can produce similar total fees; the small-transaction business simply pays a higher rate as a percentage of its sales because the flat per-transaction fee is spread across less revenue per sale.
How much does the one-time Hardware Cost matter compared to ongoing fees?
Hardware Cost only affects First Year Total Cost, added once on top of twelve months of subscription and transaction fees -- it never recurs in Annual Cost or 3-Year TCO beyond that first year. For a business processing meaningful volume, ongoing transaction fees typically dwarf even a several-hundred-dollar hardware cost within the first few months, which is why comparing POS systems on hardware price alone can be misleading.
What does 3-Year TCO include that Annual Cost doesn't?
3-Year TCO (total cost of ownership) adds First Year Total Cost -- which already includes the one-time Hardware Cost -- to two additional years of Annual Cost at the same subscription and transaction-fee levels, giving a single figure to compare against a competing system's own 3-year projection. Annual Cost, by contrast, is only the ongoing yearly run rate and excludes the hardware purchase entirely.
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