Best merchant account for ecommerce: how to choose (with CDG as one option)

There is no single best merchant account for every ecommerce store. Card mix, average ticket, chargeback rate, platform (Shopify, WooCommerce, custom), and whether you also take payments in person change the answer. Rankings that crown one winner for all online sellers are marketing, not due diligence.

This guide lays out what an online business should score when choosing a processor, then shows how CDG Commerce maps to those criteria using published rates. CDG is one option among several. We are an affiliate of CDG Commerce. Other processors remain valid, and some will fit you better.

Quick answer

Shortlist a dedicated merchant account with a published interchange plus markup once you are past a few thousand dollars a month online and you care about statement-level cost. Stay on a simple flat-rate platform if you are still validating the store, you need same-day signup, or your volume is too low for underwriting to be worth the friction.

CDG Commerce fits many U.S. stores in the $10K to $200K a month band: online markup of interchange + 0.35% + $0.15, Quantum or Authorize.Net included with no per-transaction gateway fee, month-to-month terms per Merchant Maverick, and a quote process that ends in a rate sheet and a phone call. It is not the right first stop if you are outside the U.S., need instant self-serve approval with no call, or run a category CDG will not underwrite.

What ecommerce needs from a processor

1. Honest online pricing

Online cards cost more than swiped cards at the network level. A useful processor shows either a clear flat online rate or an interchange plus markup you can audit. Avoid vague "as low as" headlines without a plan that matches your volume.

CDG publishes three volume bands. For most growing stores the relevant plan is Interchange Plus ($10K to $200K a month) at interchange + 0.35% + $0.15 online. Flat Rate lists 3.50% + $0.30 online for $1K to $10K a month with a $9.95 monthly fee on the flat-rate page. Wholesale Membership is for $200K+ a month.

2. A gateway your stack already speaks

Your cart, subscription engine, or ERP has to talk to something. Switching gateways mid-growth is expensive. Prefer a processor that includes a common gateway, or that documents a clean API, before you fall in love with a rate.

CDG includes Quantum or Authorize.Net on Interchange Plus with no per-transaction gateway fee. That helps if you already integrate with Authorize.Net. If your store is locked to a single platform's payments product, compare the platform's effective rate to CDG's markup plus any migration cost.

3. Underwriting that matches online risk

Ecommerce is card-not-present. Processors price and reserve for that. Ask how funding works, whether reserves are common in your category, and what happens on a spike in disputes. A dedicated merchant account underwrites before approval. Payment facilitators often approve fast and review later.

CDG estimates about 1 to 3 business days after quote and application. That is slower than an instant aggregator and usually safer for categories automated risk models dislike: high tickets, pre-orders, custom goods, supplements, and new brands.

4. Chargebacks, refunds, and ACH

Online sellers live with disputes. Know the chargeback fee, how representment works, and whether ACH is available for large B2B invoices on the same account.

CDG does not publish chargeback or ACH fees on its pricing pages. Merchant Maverick reports a $25 chargeback fee, a $15 retrieval fee, and ACH at 0.75% + $0.15. Treat those as third-party figures until CDG confirms them on your quote.

5. Recurring and invoice flows

Many "ecommerce" businesses are hybrid: checkout today, subscription tomorrow, invoice for wholesale. One merchant account that can run card-on-file, recurring, and invoicing reduces vendor sprawl.

CDG lists recurring billing and invoicing among its merchant features. Complex usage billing or entitlement logic still needs separate software; the processor only moves money.

6. Support when checkout breaks

Friday night gateway errors cost sales. Score phone and chat hours the way you score rates.

CDG describes support as 24/7/365, U.S.-based, and in-house. We have not audited that claim ourselves; put hours in the quote notes if they matter to you.

How CDG fits ecommerce

Criterion	CDG Commerce (published or attributed)
Online markup ($10K to $200K)	Interchange + 0.35% + $0.15
Flat online rate ($1K to $10K)	3.50% + $0.30, $9.95 a month (flat-rate page)
Gateway	Quantum or Authorize.Net included, no per-txn gateway fee
High volume	Wholesale: cost + $0.15 to $0.06 with $49 to $199 membership billed annually
Contract	Month to month, no early termination fee (Merchant Maverick)
Approval	About 1 to 3 business days (CDG's estimate)
Geography	U.S. businesses only
Business type on quote form	Includes E-Commerce as a labeled option

A simple online cost sketch

Assume $20,000 a month online, 333 orders, $60 average ticket. Use the same interchange assumptions as our comparison posts: about 1.80% + $0.10 consumer credit interchange plus 0.14% assessments.

Assumed interchange and assessments: roughly $421
CDG Interchange Plus markup: 0.35% + $0.15 = $70 + $49.95 = $119.95
Rough monthly total: about $541, or about 2.71% effective

Your card mix will move the interchange line. Debit-heavy stores pay less; rewards-heavy stores pay more. The markup line is what CDG publishes and what you can compare across quotes.

Alternatives to consider honestly

Platform-native payments (for example Shopify Payments or similar). Best when you want the fewest moving parts and your volume is still modest. Effective rates and payout rules are set by the platform. Moving off later means a gateway and underwriting project.

Flat-rate facilitators (Square, PayPal, and peers). Fast to start, shared merchant accounts, strong for very small stores. Online rates are often higher once you pass low volume, and automated risk reviews can hold funds. See our CDG vs Square comparison for a worked example.

Developer platforms (Stripe and peers). Strong APIs, billing products, and global reach. Fit teams that want to own payments engineering. Growing stores sometimes outgrow simple pricing or want a dedicated merchant account conversation. See CDG vs Stripe.

Other interchange plus providers (Helcim, Stax, and peers). Same pricing family as CDG, different markups, software, and signup paths. Helcim, for example, publishes automatic volume tiers and a full fee disclosure page; CDG wins some mid-volume online markup comparisons and includes Authorize.Net. See CDG vs Helcim.

None of these is universally worse. Match the tool to volume, stack, and risk.

Who should request a CDG quote

Request a quote if:

You are a U.S. ecommerce or hybrid business doing roughly $10K a month or more
You want a published online markup you can audit on statements
You need Authorize.Net or Quantum without a separate gateway bill
You also take retail or mobile payments and want one account
You prefer a person on the phone when something breaks

Skip CDG for now if:

You are outside the United States
You need to accept cards this afternoon with no application
Your monthly volume is a few hundred dollars and flat-rate simplicity wins on time
Your category is one merchant account providers often decline; ask before you invest time

A quote request asks for name, email, phone, and business type. CDG calls to learn volume and how you take cards. You get a rate sheet before you decide whether to apply. That is a smaller step than a full application.

Decision checklist

Write down last month's card volume, average ticket, and share of debit vs rewards credit.
List your cart and any subscription or ERP tools, and which gateways they support.
Note chargeback rate and whether you sell into high-risk categories.
Compare at least one flat-rate option and one interchange plus option using the same volume assumptions.
Read contract length, reserve language, and support hours on the offer you are about to sign.
If CDG is in the set, start with published Interchange Plus numbers, then confirm everything else on the quote call.