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AI-Powered BillingQuotes · Invoices · Customers

AI-powered billing
for modern teams.

Create invoices, manage clients, and track payments with an AI Agent, or build your own integrations with our SDK, REST API, and CLI.

Start for freeRead the docs
Free plan, no cardMulti-currency and taxesPayments with Stripe
QUO-2026-00042
Acme Studio · Website redesign
Draft
Issue date
Sep 26, 2026
Valid until
Oct 26, 2026
Currency
USD
ServiceQtyAmount
Discovery & UX workshop1$900.00
Website design · 8 pages1$1,800.00
Development (hours)12$600.00
Subtotal$0.00Tax 18%$0.00Total$0.00
Draft
Sent
Approved
Invoiced
Paid
Corebill AgentLive
Found customer Acme Studio
Added 3 services from your catalog
Applied IGV 18%
Sent to billing@acme.studio
1 clickFrom approved quote to invoice
Any currencyTaxes, discounts and partial payments
7 languagesFor your team and your clients
REST APIWebhooks, SDK and CLI included
How it works

The whole billing cycle of a service business, in one place.

Quote the work, get it approved, invoice it and get paid. Every step keeps the history, so nothing is typed twice.

01 · Quote

Send a clear proposal

Services from your catalog, versions and a public link your client can approve.

QUO-00042 · v2
Sent
02 · Approve

Your client says yes

They approve or ask for changes from the link. You get notified instantly.

Approved by Laura M.2m ago
03 · Invoice

Invoice in one click

Full or partial: a 50% deposit now, the rest on delivery.

Invoiced$1,947 of $3,894
04 · Get paid

Collect without chasing

Stripe link, bank transfer or wallet. Reminders in one click or automated.

INV-000118
Paid
05 · Report

Know where you stand

Build your own dashboards: revenue, receivables, top clients.

This month+18.4%
Developer working on a laptop
Made for servicesFor teams that sell their time and expertise.Agencies, freelancers, startups, developers and service businesses quoting and billing every week.
Product

Simple enough for a freelancer. Complete enough for a team.

Every record keeps its quotes, invoices, payments, files and conversation together, with views you can save and share.

QuotesAll quotesStatus · Open+ New quote
QuoteCustomerStatusTotalValid until
QUO-2026-00042 · v2ASAcme Studio
Approved
$3,894.00Oct 26
QUO-2026-00041 · v1NLNorthwind Labs
Viewed
$12,400.00Oct 12
QUO-2026-00039 · v3KRKappa Retail
Sent
$2,150.00in 3d
QUO-2026-00036 · v1BHBlue Harbor
Draft
$780.00Nov 2
QUO-2026-00031 · v2LHLumen Health
Invoiced
$6,300.00Sep 30
AI Agent

Write what you need. The agent does the paperwork.

It searches your catalog, uses your prices and taxes, and asks before sending anything. It answers in the language you write in.

Quotes and invoicesCreate, update, convert and send
PaymentsRecord payments and check balances
CustomersFind, create and summarize history
ReportsAnswer questions or build a chart
Invoice 50% of Acme's website quote as a deposit and send it to Laura
Found quote QUO-2026-00042 · approved
Created partial invoice INV-2026-000118 · 50%
Sent to laura@acme.studio
INV-2026-000118
Sent
CustomerAcme Studio
Deposit50% of $3,894.00
Amount due$1,947.00
Done. The deposit invoice is on its way to Laura. The remaining $1,947.00 stays available to invoice on delivery.
Ask anything about your quotes, invoices or customers…
Who it's for

Built for businesses that sell their time and expertise.

No inventory, no point of sale. Corebill is made for services: projects, retainers, hours and deliverables.

Service businesses

Run every quote, invoice and client in one place, whatever your team size.

  • —Multi-company and roles
  • —Receivables and aging
  • —Custom dashboards
For service businesses

Developers

Bill from your own product with a clean REST API.

  • —REST API and webhooks
  • —SDK and CLI
  • —Playground and logs
Read the docs

Freelancers

Send a professional quote in minutes and get paid on time.

  • —Free plan to start
  • —Stripe payment links
  • —Reminders and automations
For freelancers

Startups

Move fast on billing so you can focus on the product.

  • —Usage-based invoicing
  • —Investor-ready reports
  • —Team roles from day one
For startups

Digital agencies

Quote projects by phases and invoice deposits and milestones.

  • —Quote versions and approvals
  • —Projects with client portal
  • —Sales by salesperson
For agencies
Developers

An API that bills like your team does.

The same quotes, invoices and payments you see in the app, over a documented REST API with signed webhooks.

APIREST APICustomers, quotes, invoices, payments and projects.
WHWebhooksinvoice.paid, quote.approved and more, signed and retried.
SDKSDK and CLITyped client for Node and a CLI for your terminal.
API referenceOpen the playground
 1curl -X POST https://api.corebill.io/v1/invoices \
 2  -H "Authorization: Bearer sk_live_..." \
 3  -H "Content-Type: application/json" \
 4  -d '{
 5    "customer_id": "cus_a1b2c3d4",
 6    "currency": "USD",
 7    "line_items": [{ "item_name": "Website design", "quantity": 1, "unit_price": 1800 }],
 8    "tax_rate": 18
 9  }'
Pricing

Start free. Upgrade when your team grows.

Free

$0 / month

For freelancers getting started.

Start for free
  • Quotes, invoices and customers
  • AI Agent with monthly messages
  • Public links for clients

Pro
Most popular

$12 / month

For professionals and small teams.

Choose Pro
  • Everything in Free
  • Stripe payments and reminders
  • Custom dashboards and automations

Business

$29 / month

For agencies and multi-company teams.

Choose Business
  • Everything in Pro
  • Multiple companies and roles
  • API, webhooks and priority support
Team planning work together

Send your next quote in the next five minutes.

Create your workspace, add a customer and let the agent draft the first quote with you.

Start for freeBook a demo