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Make sense of payments.

Practical guides to virtual cards, fees, USDT and USDC funding, subscriptions and advertising payments.

Find your answer
AIHUB virtual card design
Clear steps. Better-informed decisions.

From your first top-up to your API

08 guides
01

How stablecoin-funded virtual cards work

Understand the path from a USDT or USDC deposit to a card payment, including balances, conversion and checks before funding.

3 min read
02

Virtual card fees: calculate the full cost

Compare virtual card costs with a worked example covering funding, issuance, network charges and the difference between fees and unused balance.

3 min read
03

USDT and USDC top-up checklist

Check the asset, network, address, minimum and net receiving amount before funding a virtual card with USDT or USDC.

3 min read
04

Virtual card declined? What to check

Diagnose a failed virtual card payment: card status, funds, billing details, authentication and a useful template for contacting support.

3 min read
05

Virtual cards for subscription management

Organize subscription owners, renewals, card limits and cancellations with a practical register and a monthly review routine.

3 min read
06

Virtual cards for ad spend: billing checks

Check advertising billing settings, card type, acceptance rules and reconciliation before funding an ad account with a virtual card.

3 min read
07

How to compare virtual card providers

Compare virtual card providers using evidence about eligibility, fees, funding, account access, support and unused balances.

3 min read
08

Card issuing API integration checklist

Plan a card issuing API integration with safe retries, webhook verification, reconciliation and clear acceptance criteria for business owners.

3 min read