Banking API for modern businesses
Leverage Slash APIs to speed up your finances - programmatically create cards, set limits, and receive event-driven webhooks
A true digital banking experience
Access the most powerful banking API on the market
Fully automate your workflows
Use our robust API to create cards, check balances, edit limits, and more.
Read our API docs
Flexible notifications and webhooks
Receive banking notifications to custom webhooks for transaction declines, limit updates, ACH authorizations, and more.
Learn about webhooks
Real-time authorization APIs
Split a single transaction into multiple accounting items with individual categories.
Learn about authorization webhooks
3,000+ Businesses choose Slash for expense management
“Slash is a game changer for entrepreneurs. Their financial OS is powerful, intuitive, and built with the modern founder in mind. From smart spend management to treasury accounts that earn yield, they deliver real value and help founders win.”
Arjun Mahadevan, CEO and Founder of Doola
Transparent pricing with features tailored to your business
Free
$0/month
Full-featured banking essentials with no strings attached.
Start for freePro
$25/month
Scale your business with advanced industry-specific capabilities.
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Frequently asked questions
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