Billing & Payments for Accounting Firms
Billing & Payments
Take control of your firm's revenue, from invoicing to payments to analytics.
Billing & Payments in 1 MinuteBilling that captures the value you deliver
Karbon Billing & Payments is the financial heartbeat of your firm. It builds your invoices directly from the work your team delivers, so you can see realization, catch scope changes, spot underpricing, and action decisions that drive revenue.
Free your billing team from manual busywork
Give your billing admins back the hours they spend compiling, formatting, and sending invoices.
Karbon builds invoices from work data already in the system, supports every billing model you need, and automates payment collection. Everyone can focus on work that provides value to the client and gets the firm paid.
We've been able to give our firm admin way more exciting work than PDFing invoices and attaching them to emails. That provides value to the client and gets the firm paid.
Turn work into cash faster
Remove the bottlenecks that delay you from invoicing. Send invoices before, during, or after work is completed, so cash comes in on your schedule.
Let clients pay securely through Karbon's premium client portal, with saved client payment details that autodraft when invoices become due, all without the manual followup.
Before, we would have been waiting two to six months to even invoice. Now from completion to payment it's about one to one and a half months.
Know your most valuable clients and services
See which clients and services are worth your effort, informed by your data, not guesswork or generic benchmarks.
Track realization by client, team member, and service line, spot scope changes through centralized client conversations and work data, and compare budget vs. actual year-over-year. Ground your pricing adjustment conversations firmly in reality.
I was able to pinpoint exactly where we needed to do price increases. It explains to the client — here's the data, here's the reasons why.
Show your team how they're performing
Empower your team by showing how everyone contributes to the firm's revenue.
With WIP, AR aging, revenue, and realization data available on every client, your client owners always know how their portfolios are trending and have full visibility into where to finetune revenue performance.
Karbon provides critical visibility all the way down through our leadership.
Your AR and GL, always in sync
Connect billing data directly to QuickBooks Online or Xero with native integrations, or use the billing API to pull invoice and payment data to a GL of your choice.
No double entry, no manual reconciliation, regardless of your accounting ledger setup.
Improve cash flow and profitability, and have far superior insights.
The opportunities and payout far exceed the cost.
Billing & Payments Features
Invoicing
Build and send invoices directly from the work your team delivers. Support every billing model your firm needs and invoice at any stage of the engagement.
- Flexible billing methods: Time & materials, Fixed fee, Recurring fixed fee, Progress billing
- Batch invoicing
- Write-ons and write-offs
- Invoice presentation customization
- Invoice collaboration and approval
Payments
Give clients a fast, secure way to pay with minimal chasing.
- Secure online credit card and direct debit payments
- Autopay with saved client payment details
- Card payment surcharging
- Invoices and payments in Karbon for Clients portal
Revenue Analytics & Visibility
See how every client, team member, and service line is performing without spreadsheet gymnastics. Make decisions grounded in reality, not guesswork.
- WIP and realization reports
- AR aging reports
- Budget vs. Actual on work
- Utilization reports by team member
- Budgets and time allocation tracking
- Snowflake access for custom reporting and visualization
GL Integrations
Keep your books current without manual entry or reconciliation overhead, whether you run QuickBooks, Xero, or other popular GL software.
- QuickBooks Online Accountant integration with invoice, payment & surcharge sync
- Xero integration with invoice, payment & surcharge sync
- Billing API for custom GL connections (NetSuite, Sage, and more)
Frequently Asked Questions
What does Karbon Billing & Payments include?
Karbon Billing & Payments gives your firm everything you need to manage your accounts receivable and revenue: tracking time, invoicing clients, collecting payments, and understanding your financial performance, all without leaving Karbon.
It supports invoicing across multiple billing models, online payment collection, a client portal for self-service payments, WIP and realization reporting, AR aging, budget vs. actual tracking, and native integrations with QuickBooks Online and Xero. Firms with more complex setups can also use the billing API to connect to any GL.
What billing models does Karbon support?
Karbon supports time and materials, fixed fee, recurring fixed fee, progress billing, WIP billing, and ad hoc invoicing. You can mix billing models across clients and adjust as needed. Invoices are built automatically from time entries and work items already in the system, so you’re always starting from a real baseline, not a blank page.
Can invoices be automated based on billing schedule?
Yes. For fixed fee recurring services, Karbon automatically generates invoices on a weekly or monthly schedule. These recurring invoices are auto-approved and go directly to Approved status, bypassing the draft and review stage entirely.
For ad hoc invoices, Karbon automatically surfaces unbilled work eligible to be invoiced, and you can generate invoices triggered by work start or work completion. Ad hoc invoices go through a review and approval step before being sent, either in bulk or individually.
Does Karbon use AI for time tracking and billing?
Karbon surfaces suggested time entries to help you catch missed time. When activities occur within a work item, such as completing tasks, changing work status, sending linked emails, or commenting on notes with no time recorded, Karbon adds a suggested time entry to your timesheet for that day. You can then review and confirm these suggestions as you see fit to ensure all billable work and time are captured.
Which accounting software does Karbon integrate with?
Karbon Billing & Payments has native integrations with QuickBooks Online Accountant and Xero, with automatic sync of invoices, payments, and surcharges. For firms running NetSuite, Sage, or another GL, the Karbon Billing APIs let you pull invoice and payment data directly to your system of choice.
How long does it take to implement Karbon Billing & Payments?
Implementation timelines vary by firm size and complexity, but most firms can get up and running within a few weeks. For larger firms with more complex billing migration needs, Karbon offers professional Billing & Payments implementation services led by our experts to ensure a smooth transition.
What’s the pricing of Karbon Billing & Payments?
Karbon Billing & Payments is included as part of your Karbon plan. Payment processing fees apply per transaction: Standard Visa/Mastercard credit and debit cards are 2.6% + $0.30 USD, premium and international cards are 3.6% + $0.30 USD; American Express is 3.9% + $0.30 USD, and ACH/direct debit is 1% + $0.30 USD, capped at $5.00 USD per transaction. The ACH cap makes direct debit particularly cost-effective for firms sending large invoices.
How secure is Karbon Billing & Payments?
Karbon Billing & Payments is powered by Stripe — a PCI DSS Level 1 certified processor, the highest standard in payment security. Your firm’s data is encrypted in transit and at rest (AES-256), hosted on Microsoft Azure, and backed by SOC 2 compliance. Visit our security page for more information on how Karbon protects your data and privacy.
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