Question: Is there a way to accept credit card and ACH payments from businesses through a single API or no-code invoice links, with support for guest checkout and milestone-based invoicing?

If you're looking for a more comprehensive solution to accept credit card and ACH payments from businesses through a single API or no-code invoice links, with support for guest checkout and milestone-based invoicing, Slope is a great option. Slope offers flexible payment terms, embedded financing options, and payments through API or no-code invoice links. It accepts credit card and ACH payments, supports guest checkout and milestone-based invoicing, and offers same-day ACH transactions. The platform automates AR processes for a seamless order-to-cash experience.

Another top contender is Inai, a full-stack payment platform that streamlines payment operations with a single API. It integrates with multiple payment service providers to receive payments, make payouts and automate payment workflows. Inai also comes with tools for analysis, payment method integration, reconciliation and anomaly detection. It can handle 300 transactions per second and offers enterprise-grade security for e-commerce and subscription businesses looking to reduce payment failure rates and reduce transaction fees.

Streamlined is another option. This AI-powered order-to-cash solution automates and streamlines B2B invoicing and accounts receivable processes. It offers flexible payment options, including ACH, credit/debit cards and wire transfers, with real-time auto-reconciliation and smart reminders. Streamlined integrates with popular platforms like Shopify and QuickBooks, making it a flexible option for businesses of all sizes looking to improve customer satisfaction and streamline financials.