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 SOC 2 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 save you time with client management.

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.](/content/client-portal/index.html)


Automations \
Set up workflows that save you time with client management.](/content/platform/index.html)


Subscriptions \
Automate recurring payments and billing cycles for predictable revenue](/content/guide/assembly-billing-app#subscriptions/index.html)


File-sharing \
Share files and documents securely with easy client access and permissions.](/content/file-sharing/index.html)


Tasks \
Manage tasks seamlessly across your team and clients in one place.](/content/apps/directory/tasks/index.html)


Security \
Keep data safe with enterprise-grade SOC 2 and HIPAA compliance.](https://security.assembly.com/)


CRM \
Manage client relationships and track every interaction in one hub.](/content/client-management/index.html)

Invoicing FAQs

How is Assembly different from other invoicing solutions?

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.

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.

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 control over which fees get passed along.

Do you support recurring invoices and subscriptions?

Yes. Assembly's Payments App is built for recurring payments and subscription management.