Get paid faster with modern invoicing software.
Try the best invoice software for modern service-based businesses. Generate polished invoices in seconds so you can spend more time on what matters for your business.
Streamlined invoice management for your team
Simplify your invoice system: save time with customizable invoices, tailored payment options and ways to track unpaid invoices with ease.
A professional tool for professional firms
Secure data with enterprise-grade safeguards (SOC2, HIPAA) and automate invoices with built-in tools, external APIs and webhooks. Track revenue in real-time analytics, automate billing workflows, and personalize the experience with branding and a custom domain.
Security
Keep data safe with enterprise-grade security, SOC2, and HIPAA compliance.
API
Use API endpoints and webhooks to take actions when invoices are paid.
Analytics
Gain real-time billing insights, track revenue trends, and make data-driven decisions.
Automations
Set up workflows that connect invoicing with contracts, messaging, forms, and more.
Branding
Create personalized online invoices and let clients checkout on a custom domain.
Portal
Give clients a unified platform to pay invoices, message you, sign contracts, and more.
Reminders
Automate payment reminders to keep clients on track and minimize overdue invoices.
Surcharging
Add and configure surcharges to minimize payment processing fees.
A world-class checkout & invoicing experience
Make a polished checkout experience with a fully branded customer portal where clients can pay while staying immersed in your brand. Flexible payment options streamline the experience for your customers.
More than just invoicing
Take your professional services beyond basic invoicing with an integrated, branded client portal.
Client portal
Give clients access to messages, contracts, files, and more.
Automations
Set up workflows that connect invoicing with contracts, messaging, forms, and more.
Subscriptions
Automate recurring payments and billing cycles for predictable revenue
File-sharing
Share files and documents securely with easy client access and permissions.
Tasks
Manage tasks seamlessly across your team and clients in one place
Security
Keep data safe with enterprise-grade security, SOC2, and HIPAA compliance.
CRM
Manage client relationships and track every interaction in one hub.
Forms
Create custom intake forms to collect and organize client information efficiently.
Contracts
Send professional agreements with built-in eSignatures for faster approvals.
Modern invoicing for modern businesses
Try for free for 14 days, no credit card required
Invoicing FAQs
How is Assembly different from Stripe, Zoho, Bill.com, Wave, and others?
Assembly’s invoicing features aren’t just standalone — our platform integrates contracts, forms, file-sharing, messaging, and more in one seamless hub. This allows you to create automated workflows that streamline onboarding and payment collection in a white-labeled portal.
Your clients can sign a contract, complete a form, and pay an invoice all within the same branded experience.
On the backend, having everything consolidated on a single platform means unified notifications and permissions for your team. Instead of juggling multiple logins and tools, you manage all client interactions, payment processes, and documents in one place.
This unified view simplifies collaboration, reduces confusion, and keeps everyone aligned.
How are payment processing fees structured?
Our payment processing costs are transparent and in line with industry standards. There’s a base fee for credit cards and ACH payments, plus an additional fee depending on the type of billing entity — whether you’re sending a one-off invoice or setting up a subscription.
Detailed rates, including specifics for both credit card and ACH transactions, are clearly outlined on our pricing page for your reference.
Which payment methods are supported?
Your clients can pay using credit cards, debit cards, ACH, and Apple Pay. We’re always exploring new payment methods to offer even more flexibility.
Can I pass fees onto my clients?
Absolutely.
Surcharging is natively supported, and you have granular control over which fees get passed along. For example, you might choose to pass on credit card fees to client but absorb the ACH fees yourself, tailoring the fee structure to fit your business model.
Do you support recurring invoices and subscriptions?
Yes.
Beyond one-time invoices, Assembly’s Billing App is built for recurring payments and subscription management. You can set up auto-renewals, pause or resume subscriptions, and handle billing changes effortlessly, all through a single, centralized platform.
How do I invoice someone for a payment?
- Create an invoice template.
- Upload your invoice template to Assembly’s Billing > Invoices section.
- Add your client’s details, list the services or products provided, set due dates, and more,
- Connect your preferred payment method.
- Assembly can send your client a link to payment once complete.
With Assembly, clients can view and pay invoices directly through a secure, branded portal—streamlining your billing process and getting you paid faster.
What is an invoicing system?
An invoicing system can be software that helps businesses create, send, and manage invoices for products or services. It streamlines the billing process, tracks payments, and improves cash flow.
Assembly invoicing is built directly into a secure, customizable client portal, allowing you to send professional invoices, accept payments online, and give clients a seamless billing experience.
Assembly's invoicing system helps service businesses get paid faster while maintaining a polished, branded client experience.