Microsoft Azure Blob Storage is object storage for images, backups, logs and other unstructured data. You don't buy Blob Storage on its own checkout page — it is billed through an Azure account. This guide explains what you need before you start, how Azure's sign-up and billing flow works, an important note about Azure's accepted payment methods, and how to troubleshoot the most common card-declined causes.
Before you start: read Azure's card policy first
Azure's billing documentation lists credit card, debit card, and approved wire transfer as payment methods, and it states plainly that virtual and prepaid cards are not accepted. Accepted networks vary by country — for example the United States table lists Visa, Mastercard, American Express and Discover; the United Kingdom, Canada and Germany list Visa, Mastercard and American Express; and Japan adds JCB. Some markets have extra rules, such as credit cards only in Brazil and Hong Kong SAR, Visa/Mastercard credit or debit cards in India, and local options like UPI and netbanking (India), Pix (Brazil) and Alipay QR (China).
Because Azure publishes this restriction, you should confirm your card is eligible before you try to add it. Contact Coinepay support to confirm your card meets Azure's requirement before you sign up, and check the current rules on Microsoft's own "Supported payment methods" and "Change credit card" pages. Do not try to work around a payment check — always use your real identity and real billing details.
What you need to get ready
- A registered, KYC-verified Coinepay account. If you don't have one yet, create your account and complete identity verification, then manage everything from the dashboard or the Coinepay app for iOS or Android.
- Your Coinepay virtual card details: card number, expiry date and CVV, shown in the app once the card is issued.
- The billing address tied to your card. Azure requires that the country/region you select at sign-up matches your card's billing-address country/region.
- A phone number for verification and a Microsoft account email.
- Enough available balance on the card to pass Azure's verification and any threshold-billing authorization.
Note that Azure does not support sign-up in every country or region. If your country is not on Microsoft's sign-up country-code list, you cannot create an account there. Blob tier and redundancy options can also differ by region.
Choosing your Azure account type
Blob Storage is billed through an Azure account, and Azure offers two main starting options:
- Azure free account — eligible new customers get a $200 credit for 30 days, plus a Blob Storage free allowance of 5 GB of LRS hot block storage, 20,000 reads and 10,000 writes per month for 12 months.
- Pay as you go — you move to this to continue beyond the credit period. Card charges are normally automatic each billing period.
On the pricing side, Blob Storage lists Standard (GPv2) and Premium storage, with pay-as-you-go capacity columns for Premium, Hot, Cool, Cold and Archive. The access-tier "Smart tier" uses the underlying Hot, Cool and Cold rates rather than a separate price. If you need long-term commitments, Azure Storage Reserved Capacity is offered in one-year and three-year terms, in 100 TB and 1 PB increments.
Numeric rates depend on region, redundancy, tier, volume and operations, and USD is Microsoft's retail-pricing reference currency, so non-USD figures are reference estimates. Check the current numbers on Microsoft's official Blob Storage pricing page before you commit — prices vary by region.
Step-by-step: sign up and add your card
- Go to the official Azure website and start the free account or pay-as-you-go sign-up.
- Enter your account details and select the country/region that matches your card's billing address.
- Complete phone verification.
- Complete card verification: enter the Coinepay card number, expiry and CVV, plus the exact billing name and address. Azure may place a temporary authorization to validate the card.
- Accept the agreement to finish sign-up.
If you already have a Microsoft Customer Agreement billing account, you can create a new subscription at Azure portal → Subscriptions → Add, selecting the billing account, profile, invoice section and either Microsoft Azure Plan or Microsoft Azure Plan for DevTest.
Where to manage or change your payment method
After sign-up, manage billing from the Azure portal:
- For pay-as-you-go MOSP accounts: Cost Management + Billing → subscription → Payment methods.
- For Microsoft Customer Agreement (MCA) accounts: Cost Management + Billing → Billing profiles → profile → Payment methods.
Pay-as-you-go charges are normally collected automatically each billing period. If a charge is declined or a bill is due, a Pay now option appears in the portal so you can settle it manually.
Troubleshooting a declined card
Microsoft documents several reasons a card is rejected at sign-up or billing. Work through these:
- Unsupported card or country. Remember that Azure does not accept virtual and prepaid cards, and the accepted networks differ by country. Confirm your card type with Coinepay support and verify it is allowed in your market.
- Billing-address mismatch. The name, address and CVV must match exactly, and the account country/region must match the card's billing country/region. Correct any mismatch in the portal.
- Insufficient balance or declined authorization. Azure may run a threshold-billing authorization; if the card lacks funds for that check it is declined. Make sure there is enough available balance, then retry.
- International transactions not enabled, or an inactive/blocked card. Confirm the card is active and able to make international online payments in the Coinepay app.
- 3-D Secure / bank verification. If a confirmation step appears, complete it promptly in the Coinepay app so the authorization isn't dropped.
At sign-up you may also see "We cannot proceed with sign-up due to an issue with your account. Please contact billing support" or "You are not eligible for an Azure subscription." Microsoft advises re-checking your account details, card details and billing-address match, and contacting its billing support if the message persists. If the card itself seems to be the problem, check its status in the Coinepay app and reach out to Coinepay support.
Cancelling and refunds
To stop charges, go to Azure portal → Cost Management + Billing → Subscriptions, select the subscription and choose Cancel. Billing stops immediately, services are disabled, and Microsoft issues a final invoice for usage already incurred. Reserved Capacity follows Azure's reservation exchange-and-refund rules rather than a blanket pay-as-you-go refund, with eligible returns based on remaining commitment and a US$50,000 canceled-commitment limit per billing scope over a rolling 12 months. Review Microsoft's cancellation and reservation-refund pages for the current terms.
Keep your spending under control
Because Blob Storage is usage-based, costs can grow with storage volume, operations and data retrieval — Cool, Cold and Archive tiers can add access, transaction and early-deletion charges, with documented minimum periods of 30, 90 and 180 days for GPv2 blobs. Set budgets and alerts in Azure Cost Management, and watch your Coinepay balance so an automatic charge isn't declined. You can review card activity any time from the Coinepay dashboard or app.
Get your Coinepay virtual card: Sign up · App Store · Google Play · Customer support
FAQ
Does Azure accept virtual cards for Blob Storage?
Azure's billing documentation lists credit card, debit card and approved wire transfer, and states that virtual and prepaid cards are not accepted. Contact Coinepay support to confirm your card meets Azure's requirement before you sign up, and check Microsoft's current supported-payment-methods page.
How do I add my card to pay for Azure Blob Storage?
During Azure sign-up you complete phone verification, then card verification by entering your card number, expiry, CVV and matching billing address, then accept the agreement. Later you manage it under Cost Management + Billing → Payment methods in the Azure portal.
Why was my card declined when I added it to Azure?
Common causes Microsoft documents include an unsupported card or country, a name/address/CVV mismatch, the account country not matching the card's billing country, international payments not enabled, an inactive or blocked card, or a declined threshold-billing authorization. Check these and ensure enough balance.
Is there a free option for Azure Blob Storage?
Eligible new customers can open an Azure free account with a $200 credit for 30 days, plus a Blob Storage allowance of 5 GB of LRS hot block storage, 20,000 reads and 10,000 writes per month for 12 months. After the credit period you move to pay as you go.
How much does Azure Blob Storage cost?
Rates depend on region, redundancy, tier (Premium, Hot, Cool, Cold, Archive), volume and operations, and USD is Microsoft's reference currency, so non-USD figures are estimates. Check the official Azure Blob Storage pricing page for current numbers in your region.
How do I cancel and stop charges?
Go to Azure portal → Cost Management + Billing → Subscriptions, select the subscription and choose Cancel. Billing stops immediately, services are disabled, and Microsoft sends a final invoice for usage already incurred. Reserved Capacity follows Azure's reservation refund rules.
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