American Express – customer loyalty perk

26 June 2025

We are happy to announce a partnership with Bluechain which will support our customers who wish to make payments via American Express. It is available to all our customers but subject to Terms & Conditions, with a preferential fee for those customers dealing directly with Sigma.

Partnering with Bluechain lets us offer Amex payments, giving our customers more flexibility, better cashflow management and valuable rewards.

Dipesh Vaja

Sigma Pharmaceutical / Head of Sales

Want to pay Sigma invoices with your Amex card? Pay your way with Bluechain.

Why use Bluechain?

Boost Cashflow
Keep cash in your business for what really matters by paying with a credit card

Rewards Points
Get rewarded by paying Sigma invoices with your Amercian Express card

NHS Payments
Receive NHS payments before you need to settle your Amex statement

Reduced Bluechain Fee
Bluechain charge 2.3% for all Amex payments, however, due to our partnership with Sigma you will receive a preferential rate of 1.85% when paying Sigma invoices with Amex.

Paying Other Suppliers
Bluechain gives you control and flexibility over all your business payments. To pay other suppliers we charge a fee of 2.3% for Amex and 2.5% for Visa & Mastercard.

Please use this link to set up your free Bluechain account.

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