Week 1
Map your billing.
- YouShare pricing rules and sample invoices
- YouProvide access to operational and cost data
- WeMap billable events, costs, surcharges and exceptions
Usage-based billingCost and margin includedWorks with your AI assistant
Usage-based billing with the margin built in.
Billr prices everything your systems record, from warehouse services to API calls, against each customer's own contract. Where you have a cost, it sits next to the price. Finance gets invoice-ready lines, your team gets its month back.
Book 30 minutesA 30-minute call about your billing. Free, no contract, no obligation.
- €100M+
- billed through Billr every year
- 50,000+
- billable events per day
- 4 weeks
- from first call to live billing
What do you bill?
Pick your business. Each page shows how Billr handles your rate cards, your costs and your month-end.
3PLs and fulfillment
Every order priced, every margin visible.
See how it works
AI and API products
Prepaid balances, token costs and margin per customer, priced as requests arrive.
See how it works
Telco and eSIM resellers
Several providers in. One invoice per customer out.
See how it works
EV charging operators
Every session priced, every roaming cost visible.
See how it works
Another industry? Write to hello@billr.io.
AI assistant
Ask Billr anything. Through the AI you already use.
Copy one page from Billr into Claude, ChatGPT, Cursor or any assistant that can call an API. From then on it reads your customers, charges, price lists, bills and analytics directly, with the permissions of your own user.
- Investigate. Why did this invoice go up, which customers lose money, what did we charge this customer last year.
- Report. Margin per customer, product or service, as a table, a chart or a sentence, without an export.
- Prepare. Draft price lists, overrides and corrections. You review and publish in Billr.
- Nothing to install. The full data model is open through GraphQL, the analytics through REST. Your roles still apply.
Your AI assistant, connected to BillrClaude · ChatGPT · Cursor
Which customers were under 15 % margin in September?
Three of 41 customers were below 15 % in September. All three are on the 2025 rate card and ship mostly to zone 3:
| Customer | Revenue | Margin |
|---|---|---|
| Northwind Outdoor | €48,210 | 11.4 % |
| Harbour Supplies | €31,905 | 12.9 % |
| Atlas Home | €17,330 | 14.2 % |
Source: Billr analytics, revenue and margin by customer, 1 to 30 September
Why did Northwind's invoice go up 18 % compared to August?
Volume is flat (+2 %). The increase comes from two things: 312 shipments moved from zone 2 to zone 3 after their new warehouse opened on 9 September (+€5,140), and the fuel surcharge rose from 9 % to 12 % on 1 September (+€1,870).
Source: 4 GraphQL queries on charges and price lists, 2 seconds
Prepare a 3 % increase for Northwind from 1 January, I will review it.
Done. Draft price list "Northwind 2027" is ready for your review in Billr, valid from 1 January 2027, 86 prices, zone 3 surcharge kept as is. Nothing is published until you approve it.
Before and after
The same month, with and without Billr.
 Without Billr |  With Billr | |
|---|---|---|
| Prices | A spreadsheet per customer, one person knows it | Price lists per customer with validity dates, anyone can look up any date |
| Supplier price change | Edited customer by customer, some forgotten | Updated once, every customer price follows its markup rule |
| Month-end | Days of exports and reconciling | Priced all month, the run is checked and approved in an afternoon |
| Margin | A total at month-end, per customer at year-end | Per customer and service, every day |
| A customer asks why | Someone searches three systems | A line-by-line report comes with every invoice |
| A wrong price | Credit note by hand, history lost | Credited and re-priced with a preview, originals kept |
Billing shouldn’t take you months to implement
Here’s what you can get done
with Billr in just 30 days
Week 2–3
Configure & validate.
- WeConfigure customer-specific pricing rules
- WeConnect your accounting / invoice workflow
- BothReconcile Billr output against current billing
- BothRun Billr in parallel with production
Week 4
Go live.
- WeOngoing support
- YouBill real customers with Billr
- YouUpdate pricing without engineering
- YouReview exceptions and billing insights
Case studies
“Using this platform has been a game-changer. It handles different pricing models seamlessly.”
Nolan Rook
CTO at Ecomflow
“Rethink your processes. Rethink your pricing. Billr gives you the freedom to model and price anything you can imagine.“
Lutz Prosser
CFO at Quivo
A look inside
What your team sees every day.
The morning check
Every data source up to date, every usage processed, every bill finalised. Revenue per week, unbilled charges older than 30 days.
One customer, the whole history
Billing settings, revenue over the year and every bill with its CSV and Excel report, ready to send.
Every event with its status
Processed, pending, skipped or failed with the reason. Search by order number or tracking reference.
Built for the complexity of usage-based billing.
Handle customer-specific rates, surcharges, exceptions and integrations without forcing your operations into a standard billing model.
Change prices without engineering.
Update rates, surcharges and customer overrides from a date you choose, run the yearly increase across every customer in one step, and look up what any customer paid on any day.
Any pricing model your customers require.
Volume tiers, rate tables by weight and zone, free allowances, minimums, surcharges, customer overrides and exceptions. Priced from price lists with validity dates, not from spreadsheets.
Works with your existing stack.
Send operational, shipping and cost data through the Billr API, scheduled imports or file exports, and hand invoice lines to your accounting tool. Not on the list? It is built during your setup.
Warehouse and operations
- Mabang
- GoedGepickt
- Effitrace
- Your WMS via API or export
Accounting and invoicing
- Xero
- QuickBooks
- DATEV
- Exact Online
- Billit
Payments and data
- Stripe
- CSV and Excel
- REST and GraphQL API
Bill customers across markets.
Invoice lines in the customer's language and currency, one bill per customer, location and currency, handed to Xero, Stripe, QuickBooks, DATEV or the tool you invoice with today. Peppol e-invoicing included through them.
Controls
Built for finance teams that get audited.
Billing software is judged on the month it goes wrong. These are the rules Billr enforces so that month does not happen.
Recorded once, never billed twice
Send an event as often as you like. Billr stores it once under its ID, keeps its order or session reference, and it can only ever be billed once.
Billing waits for complete data
A run does not start until every data source has delivered up to the period end and no errors are waiting. Nothing goes out until you approve it.
Gap-free invoice numbering
Numbers are assigned when a bill is finalised, in sequence, one bill per customer, location and currency. No holes to explain to the auditor.
Corrections keep the history
A credit reverses the revenue, with or without the cost. A corrected event credits the old charges and bills new ones. The originals stay.
Re-price with a preview
After a price change, see the difference per customer for a selection or a whole period before anything is applied.
Who changed what, and when
Field-level history on prices, price lists, mappings and overrides, plus who started and who approved every billing run.
Every customer runs in its own environment in the EU (AWS Ireland), with its own database, its own users and invite-only access.
Built to scale with your operation.
From your first customers to millions of billable events, Billr scales without changing your billing infrastructure.
Connect Billr to your existing systems
Send operational events from your WMS, platform or gateway through the documented Billr API or scheduled imports. Each event is priced within seconds of arriving. The same API answers any question your team or your AI assistant asks.
GraphQL: send a usageidempotent, priced within seconds
mutation {
upsertUsage(
id: "ORDER-48112"
usageTypeId: "OUTBOUND"
customerId: "northwind"
locationId: "HAM-1"
serviceDate: "2026-10-16T09:41:00Z"
data: { pieces: 3, weightKg: 1.8,
zone: "EU3", carrier: "DHL" }
references: [{ typeId: "tracking",
value: "JD0148112AT" }]
) { id }
}GraphQL: ask for anythingthe whole data model, same permissions as your user
query { listCustomers(limit: 5) { items { id name } } }Questions we hear first
We are not a 3PL, an AI company, a telco or a charging operator. Is Billr for us?
Probably. Billr fits any business that bills many customers for what they use, at customer-specific prices, with a cost behind each unit. The four pages are where we have customers or active work. If yours looks different, write to hello@billr.io and describe how you bill today.
What does Billr cost?
A monthly platform fee plus a usage fee priced per thousand charges, so the usage part stays a fraction of a cent per priced line. You get a concrete number on the first call, once we know your volume. There is no implementation project to buy first.
Do we have to replace any of our systems?
No. Billr reads events from the systems you already run, whether that is a WMS, a charging backend or an API gateway, through its API, scheduled imports or file exports. It prices them and hands invoice lines to the tool that already sends your invoices. Nothing in your operation changes.
How long until we bill real customers with Billr?
About four weeks. Week one we map your pricing from your rate cards and invoices, weeks two and three we configure Billr and run it next to your current billing, week four you bill with it.
Does Billr send the invoices?
Billr produces the priced, auditable invoice lines and the line-by-line report per customer. Xero, Stripe, QuickBooks, DATEV or whatever you invoice with today sends the invoice, so your numbering, layout and e-invoicing stay where they are.
Who can see our data?
Only your users. Every customer runs in its own environment in the EU with its own database, invite-only access and roles. An AI assistant you connect acts with the permissions of the user who connected it, nothing more.
What happens after the 30-minute call?
If you want, you send us one customer's invoice and the data behind it, and we return that month priced in Billr with a short write-up. If you do not like what you see, nothing happens. No contract is involved at any step.
Who you talk to
Built for a real operation before it became a product.
Billr is made by Kandu, a Vienna software company that has built systems for high-volume operations since 2015: warehouse management, the integrations between shops, warehouses and carriers, and the billing behind them.
Kandu built Billr in 2024 for a logistics customer whose spreadsheets could no longer price its volume. It became a product when the next company asked for the same thing. It bills more than €100M a year today, and the engine that prices shipments prices API calls, SIM usage and charging sessions the same way. Behind it: a small engineering team in Vienna and a company that has been profitable every year since it started.
The 30-minute call is with Dominik Bieringer, the founder. He has been on the operations side of usage-based billing himself, and he is the person who decides what Billr builds next.
Dominik Bieringer
Founder
- Company
- Kandu GmbH, Vienna
- Software for operations since
- 2015
- Billr in production since
- 2024
- Billed through Billr
- €100M+ per year
- Your call is with
- the founder
The first step
Your month in Billr. Free.
You do not need a project, a budget or a decision to find out what Billr would change for you. You need half an hour.
30 minutes, your case
You show us how you bill today: your systems, your price lists, where the month goes wrong. We tell you on the call what Billr would do with it, and what it would not.
Your real data in Billr
One customer, one month: send us the invoice and the data behind it. You get it back priced in Billr, matched against your invoice, with the breakdown behind every line and the analytics on top: volumes, revenue, margin.
Something you can forward
A short document: what matched, what differed and why, what we found in the numbers, and what a setup would involve. No contract, nothing to install, nothing to prepare.
If you do not like what you see, you say no. That is the whole risk.