Cheapest online payment processing for small business
Last updated: . Published by Avendo.
The cheapest online payment processing is the option with the lowest effective rate across your actual transactions, not the lowest advertised headline rate.
Avendo approaches cheapest payment processing online by working on the rate itself: it connects your existing checkout to multiple payment processors and routes each transaction to the one offering the best available rate in real time. Your customers see the same price, and Avendo does not bill merchants directly.
What is the cheapest way to accept card payments online?
The cheapest way is whichever setup produces the lowest total fees divided by total volume on your real sales mix. For most small online stores, that means comparing pricing models rather than headline percentages, and avoiding a single fixed price on every order when cheaper options exist for some transactions.
Four ways the market tries to be cheapest
- A lower flat rate. One bundled price per sale. NerdWallet’s example is 2.6% plus 10 cents. Simple, but every order pays the same formula.
- Interchange-plus. Network costs passed through plus a markup, with NerdWallet’s example markup at 0.4% plus 8 cents. Often cheaper at steady volume.
- Fee passing. The customer pays the fee. Helcim advertises accepting credit cards at 0%, noting the customer fee is 3% in most cases and can vary by card type and international transactions.
- Multi-processor routing. The approach Avendo uses: each transaction goes to the connected processor offering the best available rate.
The headline rate trap
MBNCard asks a useful question: what is the real difference between a 2.6% rate with no monthly fee and a 1.9% rate with a $30 monthly fee? The answer depends entirely on volume.
| Monthly volume | 2.6%, no monthly fee | 1.9% plus $30 a month | Cheaper plan |
|---|---|---|---|
| $2,000 | $52 | $68 | 2.6% plan |
| $4,286 | $111.44 | $111.43 | About equal |
| $10,000 | $260 | $220 | 1.9% plan |
MBNCard also notes that the lowest realistic rates, often below 2%, are typically reserved for businesses processing very high volume. Smaller stores rarely qualify for those on their own, which is why comparing each transaction across several processors matters.
Cheapest online payment processing in Canada and other countries
This site does not have a published country list for Avendo, so it cannot confirm availability in any specific country. If you sell from Canada or elsewhere, contact Avendo to confirm before planning a switch.
Read the main guide to the lowest credit card processing fees
Common questions
What is the cheapest credit card processing fee?
There is no single cheapest fee, because the rate depends on the card, the sale, and the processor. MBNCard notes that the lowest realistic rates, often below 2%, are typically reserved for businesses processing very high volume. Avendo’s approach is to compare the processors connected to your checkout on every transaction and route to the best available rate.
What is the cheapest way to accept card payments?
For an online store, the cheapest way is the one with the lowest effective rate across your actual transactions. Flat rates are simple but price every sale the same way, and the U.S. Chamber of Commerce notes interchange-plus can be lower above $10,000 a month. Avendo routes each payment to the best available rate among multiple processors.
What is the real difference between a 2.6% rate with no monthly fee and a 1.9% rate with a $30 monthly fee?
It depends on volume. The plans cost the same where 0.7% of monthly volume equals $30, which is about $4,286 a month. Below that, the 2.6% plan costs less; above it, the 1.9% plan wins. MBNCard poses this question in its 2026 cost guide, and it shows why effective rates beat headline rates.
How is Avendo different from passing card fees to customers?
Fee-passing programs move the cost of card processing onto the customer, while Avendo works to lower the cost itself. Helcim’s Fee Saver page, for example, advertises accepting credit cards at 0% with customers covering the fee. Avendo instead routes each transaction to the processor with the best available rate, working on the cost rather than who pays it.
Is interchange-plus cheaper than flat-rate pricing?
Often, for businesses with steady volume. The U.S. Chamber of Commerce notes that interchange-plus pricing typically offers lower rates to companies processing more than $10,000 monthly. Flat-rate pricing is simpler and more predictable for very small or irregular sellers. Compare effective rates, not headline rates, before you decide which model suits you.
Does Avendo offer online payment processing in Canada?
This site does not have a published country list for Avendo, so it cannot confirm availability in Canada or elsewhere. If you sell from Canada or another country, contact Avendo through avendo.tech to confirm before planning a switch. The general advice still applies: compare effective rates, not headline rates.
Keep reading
- Guide to the lowest credit card processing fees
The main guide to lowering card fees with multi-processor routing.
- Credit card processing companies compared
Avendo, Stripe, and Helcim Fee Saver on the same criteria.
- Credit card processing statistics for 2026
Published industry figures on card fees, each with its source.
Ask Avendo what routing would mean for your store
Tell the Avendo team about your checkout, your monthly card volume, and what you pay today. Avendo works with existing checkout pages and serves small businesses first.