Payment Depot

Who Payment Depot is for

Payment Depot is a membership-based processor: you pay a flat monthly fee ($59-$99) and get interchange passthrough with no percentage markup. The only variable cost is a small per-transaction fee ($0.07-$0.15 depending on your plan). For businesses in the right volume range, this model saves real money compared to flat-rate processors.

Payment Depot was acquired by Stax in 2021 and now operates as “Payment Depot by Stax.” The website is still active and the brand still exists, but the backend infrastructure, support, and processing all run through Stax. Think of Payment Depot as the budget entry point to the Stax ecosystem: lower monthly fees, fewer features, aimed at businesses processing under $250,000 per year.

The ideal Payment Depot merchant is a brick-and-mortar business processing $8,000-$20,000 per month. Below $8,000, the monthly membership fee eats into the interchange savings and you are better off with a no-monthly-fee option like Helcim. Above $20,000, you start bumping into volume caps and should evaluate Stax directly.

The membership math

The appeal of membership pricing is straightforward: instead of paying a 0.4-0.5% markup on every transaction (interchange-plus) or a 2.6% flat rate, you pay a fixed monthly fee and get interchange at cost. The math works when your volume is high enough to offset the monthly fee.

Estimated monthly costs for in-person payments ($40 average ticket, 1.8% average interchange):

Monthly volume	Payment Depot Starter ($59/mo + IC + $0.15)	Helcim (IC + 0.4% + $0.08)	Square (2.6% + $0.15)
$5,000	~$168	~$120	~$149
$10,000	~$238	~$240	~$298
$15,000	~$308	~$360	~$446
$20,000	~$378	~$480	~$595

Below $10,000/month, Payment Depot’s $59 monthly fee makes it more expensive than Helcim (which has no monthly fee). The breakeven against Helcim is roughly $10,000/month. Above that, the membership model starts saving money because your per-transaction cost is lower.

Against Square, Payment Depot wins at every volume level above roughly $5,000/month. The gap widens as volume increases: at $20,000/month, you save over $200/month ($2,600/year) compared to Square.

The Growth plan ($99/month, $0.07 per transaction) makes sense above roughly $15,000/month, where the lower per-transaction fee offsets the higher monthly cost. At $20,000/month on the Growth plan, estimated cost drops to about $355/month.

The post-acquisition problem

Payment Depot’s original value proposition was simple: transparent membership pricing, no contracts, no hidden fees, no percentage markup. For years, that reputation held.

After the 2021 Stax acquisition, the reviews tell a different story.

Trustpilot sits at 2.1 out of 5 stars. The BBB score is 1.8 out of 5 for customer reviews (though the BBB rating itself is A+). Google reviews average 3.4 out of 5. The pattern in negative reviews is consistent:

Fee increases without clear notice. Merchants report effective rates climbing from approximately 2.6% to 3.5% through new or increased fees that were not part of their original agreement. PCI compliance fees, “statistical package” fees, and rate adjustments appear on statements without advance explanation.

Support quality decline. Response times reportedly increased. Merchants describe difficulty reaching knowledgeable agents and getting conflicting information from different support representatives.

Funding delays. Several merchants report settlement time increasing from next-business-day to 3 or more business days after the transition. Some report missing deposits that required multiple calls to resolve.

Cancellation friction. Reports of continued billing after cancellation requests, requiring bank involvement to stop charges.

These complaints do not represent every Payment Depot merchant. The Trustpilot profile shows 87% five-star reviews alongside the negative ones, which suggests many merchants are satisfied. But the post-acquisition deterioration pattern is consistent enough across review platforms to warrant caution.

Bottom line

Payment Depot’s membership model is conceptually the right way to price payment processing. Interchange passthrough with no percentage markup rewards higher volume and keeps costs predictable. The 90-day satisfaction guarantee and month-to-month billing reduce the risk of trying it.

The concern is execution. The post-Stax-acquisition complaints about fee creep, support decline, and funding delays are a real pattern, not isolated incidents. If you sign up, monitor your statements closely for unexplained fee changes and keep records of your original pricing agreement.

For businesses processing $10,000-$20,000 per month who want membership pricing, compare Payment Depot against Helcim (interchange-plus, no monthly fee, no contracts) and Stax (higher monthly fee, more features, same parent company). Run the numbers at your specific volume. For most merchants in this range, Helcim’s simplicity and transparency make it the safer choice, even if Payment Depot’s per-transaction math looks slightly better on paper. A statement audit will show you exactly where you stand.