How To Pay

Payments

How To Pay At SwissChems

Choose from secure card, bank-transfer, wallet and cryptocurrency payment options for research products.

Cards

Pay By Card

Real-time Mastercard and Visa payments for US-issued credit and debit cards.

Wallets

Pay By Bank Transfer — Plaid ACH

Plaid ACH, Coinbase, Zelle, Interac and supported crypto wallets in one checkout.

Crypto

Pay With Cryptocurrency

Bitcoin, ETH and additional cryptocurrencies with fast global settlement.

Quick AnswerWe accept Mastercard and Visa, bank transfer through Plaid ACH, Coinbase, Zelle and Interac, plus supported cryptocurrencies.
Before You Place An OrderComplete the “Verify you are human”, age confirmation, and Terms & Conditions checkboxes before submitting payment.

Choose A Payment Method

Payment Methods At A Glance

MethodProcessorSettlementRegion
CardsWPayReal-timeUnited States
Wallets4SquareInstant–3 daysUS, Canada & global wallets
CryptoNowPayments15–60 minutesGlobal

Common Issues And How To Fix Them

Verify You Are Human

Complete the checkbox at the bottom of checkout. This is the most common reason a payment silently fails.

Age & Terms

Confirm that you are 21 or older and accept the Terms and Conditions above Place Order.

Browser Extensions

Temporarily disable ad blockers or privacy tools if they prevent the secure payment frame from loading.

Frequently Asked Questions

What payment methods does SwissChems accept?

Mastercard and Visa, bank transfer and alternative rails through 4Square, and seven cryptocurrencies through NowPayments.

What should I check first if payment will not go through?

Complete the human verification, age confirmation and Terms checkboxes, then disable any extension that blocks the payment frame.

Why was my card payment declined?

Common causes include an unsupported card, a bank-side fraud decline or an incomplete 3DS verification. Contact your issuing bank before retrying.

Why does my statement show 4Square?

4Square Systems is the merchant of record for that option, so this descriptor is expected and is not a billing error.

Why is my cryptocurrency payment not confirming?

Check that the exact amount went to the unique order address within the rate-lock window. Network congestion may also delay confirmation.

What are the return and refund terms?

Initiate returns within seven business days. Products must be unopened; approved refunds include the stated restocking and processing fees.

Overview

OverviewSecure Mastercard and Visa payments for US-issued credit and debit cards, with real-time transaction confirmation.

Payment Details

Accepted Network

Mastercard & Visa

Processor

WPay / Authorize.net

Settlement

Real-time

How To Pay

  1. Select Card Payment. Choose Mastercard & Visa Payment at checkout.
  2. Enter Card Details. Add the cardholder name, card number, expiry date and CVV.
  3. Complete Bank Verification. Finish the 3DS step when requested. Do not click Place Order twice.
  4. Submit The Order. Successful authorization confirms instantly and moves the order into fulfilment.

Common Issues And How To Fix Them

Unsupported Card

Only Mastercard and Visa are accepted. Use 4Square or cryptocurrency for other networks.

Bank-side Decline

Call the number on the back of your card and ask the bank to authorize the transaction.

Incomplete Authentication

Make sure the 3DS or bank verification window was fully completed.

Overview

OverviewThe 4Square gateway combines Plaid ACH, Coinbase Crypto, Zelle, Interac and supported crypto wallets in one checkout.

Payment Details

Supported Rails

Plaid, Coinbase, Zelle, Interac

Settlement

Instant–3 business days

Availability

US, Canada & global wallets

How The Redemption Code Works

  1. Select the 4Square option at SwissChems checkout.
  2. You are redirected to the Redemption Code Secure Payment page.
  3. Choose Plaid ACH, Coinbase, Zelle, Interac or a supported wallet.
  4. Complete payment to 4Square through the selected rail.
  5. 4Square issues a one-time-use digital redemption code.
  6. The code is automatically applied to the SwissChems order.

Common Issues And How To Fix Them

Statement Shows 4Square

This is expected because 4Square is the merchant of record.

Rail Connection Failure

Return to the gateway and choose another available payment rail.

Cancelled Or Timed Out

No code means no completed charge; any temporary hold should release.

Overview

OverviewNowPayments provides fast, globally accessible cryptocurrency settlement without reliance on banking systems.

Payment Details

Supported Assets

BTC, ETH, BCH, SOL, ZEC, TRX, DOGE

Processor

NowPayments

Settlement

15–60 minutes

How To Pay

  1. Select CryptoPayments. Choose it at checkout.
  2. Pick Your Cryptocurrency. Choose one of the seven supported assets.
  3. Get The Address. Scan the QR code or copy the unique address for this order.
  4. Send The Exact Amount. Pay the quoted amount within the 15-minute rate-lock window.
  5. Await Confirmation. The order processes automatically after blockchain confirmation.

Common Issues And How To Fix Them

Incorrect Amount

Underpayment will not mark the order paid. Contact support if the payment window expired.

Incorrect Address

Every order has a unique address. Contact support immediately with the TXID if needed.

Network Delay

Bitcoin can exceed 60 minutes at peak load; confirmation occurs when the network clears it.

Need More Help?

These resources cover account, shipping and payment questions.

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