How to Invoice Clients for AI Agents and Websites

You found the lead, audited the site, pitched the fix and closed it. Now you have a website to charge for once, an AI agent to charge for every month, and usage on that agent coming out of your own balance every time a customer calls. If the billing lives in a spreadsheet and a separate invoicing app, it's easy to undercharge for months without noticing.

bizvoid's Client Billing lets you invoice clients from the same place you built the site and set up the agent. This guide covers how it works, what it costs, how to fold agent usage into a monthly retainer, when the money reaches your bank, and how a paid invoice shows up on your pipeline. Client Billing opens by application, and it says so on the pricing page: approval required.

What Client Billing is

Client Billing is invoicing built on Stripe Connect. You get your own Stripe account, set up inside bizvoid, and your clients pay you through it. You are the seller. bizvoid provides the invoice, the payment page and the tracking, and takes one fee per paid invoice.

When you send an invoice, Stripe emails it to your client with a link to a secure payment page, and bizvoid gives you a "Copy payment link" button too. Invoices are due 14 days after you send them. Stripe's emails sometimes land in spam, so tell the client to look out for it, or paste the payment link into a text yourself.

Apply, then connect Stripe

Setup has two steps.

1. Apply. You give your legal name, business type, country and how long you've been operating, and you describe what you'll invoice for, who your clients are, your typical invoice size and your monthly volume. You also confirm one line: "I will only invoice clients through bizvoid for work actually delivered through bizvoid." bizvoid approves a clean application without a manual review. Others get a manual look, usually within one business day.
2. Connect Stripe. After approval, you finish Stripe's onboarding without leaving bizvoid. Stripe collects your identity and bank details, and bizvoid never sees them. Choose your country with care: Stripe locks it to your account when the account is created, and it can't be changed later.

The fee, in plain numbers

bizvoid takes one fee per invoice, and the rate depends on where your business banks:

• 4% where your clients can pay into your own Stripe account. The money never passes through bizvoid.
• 6.5% where Stripe doesn't yet let businesses in your country take card payments into their own account. Your client pays bizvoid, and Stripe forwards the money to your account.

Card processing comes out of that fee, so there's no separate processing charge on top. The invoice form shows the split before you send: "Your client pays", the bizvoid fee, and "You receive". A few rules to know:

• The smallest invoice is 50 in your account's currency, and bizvoid never converts currencies.
• For your first 30 days, a US dollar account can bill up to $2,000 per invoice and $5,000 in total.
• bizvoid doesn't return its fee on a refunded or disputed payment, and Stripe's dispute fee ($15 in the US) passes to you.

One-time or monthly: pick the invoice type

Every invoice is one of two types:

• One-time. A single invoice, for a setup fee or a website build.
• Monthly. A retainer that bills every month until you cancel it.

Each invoice carries one description and one amount. A client who pays a setup fee and a monthly retainer gets two invoices: a one-time invoice for setup and a monthly one for the retainer. If one monthly price covers several services, say an agent plus site care, name both in the description so the client sees what the retainer buys.

Invoice a website

When you finish a site in bizvoid's Site Builder, the builder asks "Built this for a client?" and offers an "Invoice this client" button. If the site is still private, paying the invoice publishes it on its own, with nothing left for you to click. That makes a clean handoff: the client pays, the site goes live. If a client pays you some other way, you can still publish the site yourself.

Invoice an agent

On the Agency plan you can run agents for clients under each client's own name and number, and bill for them from the same screen. Open the client's agent list and choose "Send invoice". The form reads "Bill [client] for [agent]", and a blank description defaults to the agent type and the client's business name. bizvoid fills in the client's billing email when it has one, and saves the first email you use for next time.

Agent invoices use the same two types. A common structure is a one-time invoice for setup (writing the script, testing the forwarding, handling texting registration) plus a monthly invoice for running the agent.

Pass agent usage costs through the retainer

Client Billing invoices a fixed amount. It doesn't add minutes or texts to the invoice for you, so you build usage into the price. Start with what the agent costs you. Agents run on a prepaid balance in your bizvoid account:

• Answered calls cost 30 cents a minute, rounded up to the next minute.
• Campaign calls, where win-back and lead qualification agents call out, cost 34 cents a minute.
• Texts cost 5 cents each.
• A bizvoid number costs $8 a month.
• Business texting registration is charged at cost on Starter and Pro. Agency covers it for your own business and up to five clients.

Then set the retainer in three steps:

1. Measure. After the first month, open the agent's detail page. It shows calls answered, handoffs, average call length, texts sent and spend.
2. Add headroom. A busy month costs more than a quiet one. Every 100 answered minutes cost $30, so price for the busy month.
3. Add your time and value. The retainer pays for reviewing calls and updating the script too, and the owner judges it by the jobs it saves, not by minutes.

Turn on auto-reload so a busy month doesn't drain the balance and silence the agent. If a client's usage grows past what the retainer covers, give them notice, cancel the old monthly invoice and send a new one at the new price.

When the money reaches you

Where clients pay into your own Stripe account, a new account's payouts arrive 7 days after the client pays. The wait keeps money on hand for refunds and disputes, and bizvoid shows your payout delay on the Client Billing page.

Refunds come out of your Stripe balance. If a refund or dispute pushes that balance below zero, Stripe debits your bank to cover it. You get 3 days for the balance to come back to zero before bizvoid pauses new invoices (sooner if that bank debit fails), and the pause lifts on its own once the balance recovers. Invoices you already sent can still be paid while you're paused, and bizvoid emails you when a pause starts and when it ends. Two open chargebacks at once also pause new invoices, so answer a dispute the day it arrives.

Keep the client on your pipeline

A paid invoice lands on your pipeline. When a client pays, bizvoid moves that business to Won on your pipeline, valued at what they've paid minus any refunds. Each month a retainer renews, the payment adds to the same card. The card shows an amber "Invoice sent" pill with the amount until the client pays, then a teal "Invoice paid" pill. You can see who owes you and who's current without opening another tool.

Taxes and paperwork

You are the seller, so sales tax, VAT, GST and income tax on what you invoice are your responsibility. bizvoid doesn't calculate, collect or remit tax. Stripe issues the tax forms it's required to, such as a 1099-K in the US. Talk to an accountant about what applies to you.

The takeaway

Bill the way you deliver: a one-time invoice for the build or setup, a monthly retainer for the agent, and usage costs folded into that retainer with room for a busy month. Client Billing keeps the invoices, the payments and the pipeline in the same place as the leads, sites and agents they came from. If you haven't sold the agent yet, start with how to sell AI voice agents to local businesses. Plan details are on the pricing page, and you can start free.