4.8 / 5 20,000+ businesses transact with Nickel →
Embed Nickel into any tool or workflow
Use Nickel’s API to send invoices, collect payments, pay bills and reconcile transactions across all your systems—ERP, CRM or custom software
Trusted by 20,000+ industrial small businesses
Direct engineering support
Our engineering team will work directly with your team from set up to go live
Modern Open API
Well documented REST API built to industry standards
Simple to develop and test
End-to-end testing in our free sandbox environment
Bank Grade Security
Enterprise-level encryption and compliance protect every API call
What you can build with Nickel’s API
No matter what tools you run your business on, Nickel’s API fits right in
Embed into your existing tools
Bring Nickel's invoicing, payments, and customer management directly into your ERP or custom software
Sync data across every system
Automatically reconcile and push transaction data to your accounting, reporting, and operations tools
Automate your unique workflows
Build custom triggers and routines that match exactly how your business operates
Need to connect to QuickBooks?
Nickel integrates natively with Quickbooks Online and Desktop. Connect in minutes without writing a single line of code and automatically sync your invoices and bills
Everything you do in Nickel, available programmatically
Access Nickel's core features programmatically and receive real-time updates via webhooks
Send payment links
Create new invoices and request payment from customers
Create and onboard customers
Onboard new customers and securely save their payment methods on file
Charge payment methods on file
Automatically charge customer's paymentmethod on file and apply it against open invoices
Create and pay bills
Pay your vendors using ACH, card or check
Onboard new vendors
Request vendor payment details and securely save them in Nickel
Receive payment updates using webhooks
Get real time notifications when payments are completed, failed or updated
What you can’t do
with Nickel’s API
Use Nickel as a payments gateway
Nickel is an invoicing and bill pay platform, not a standalone payments gateway like Stripe or Adyen
Power an eCommerce Checkout
Nickel is built for B2B invoice-based payments, not for eCommerce checkout or shopping carts
Build a third party payments platform
Nickel is designed for businesses integrating their own tools, not for third parties building software platforms or payments solutions
See Nickel’s API in action
How BACA Systems created a custom billing workflow with Nickel and Salesforce
"We used to manually juggle between Salesforce and multiple billing tools.
Now Nickel is embedded directly into Salesforce with one seamless workflow.
The API was clean, their engineers helped us get live fast, and reconciliation that used to take 20 hours a week happens automatically"
Powered by bank-grade security
PCI standards
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We uphold PCI compliance to keep your credit cards and bank accounts secure at all times
SOC 2 compliance
We follow strict security standards and are audited quarterly to meet SOC 2 requirements
Encryption & tokenization
We use strong industry protocols to encrypt and tokenize your payment data to protect it
FAQs
No, Nickel is not a payment gateway and does not provide direct access to credit card processing, tokenization, and other gateway capabilities
No. Nickel has a native QuickBooks integration that you can set up in minutes without writing any code. The API is for connecting Nickel to tools where there isn't an existing integration
Please get in touch with our team to learn more about pricing
Yes, you'll need someone with basic development experience to build and maintain your integration. Our team is available to help with setup and troubleshooting.
Yes. Nickel provides a full sandbox environment so you can build and test your integration without affecting live data.
You'll work directly with our engineering team. We help with setup, troubleshooting, and getting your integration live.
We're happy to help and support your unique use case. Please get in touch with our team to discuss your requirements