Invoicera is usage-based billing software for quantities, units or consumption entered or imported as invoice line items. Finance can apply the appropriate rate card, combine fixed and usage-based components in one billing run, and retain a visible review path before the invoice reaches the client.
Recognise the work
A variable charge needs a source, a rate and an owner.
The difficult part is not multiplying quantity by price. It is showing where the quantity came from and who reviewed the resulting charge.
See how this model sits beside recurring schedules and project billing in one billing operation.
- 01
The quantity arrives separately
Finance receives a file or approved total that must become a billable line item.
- 02
The rate differs by customer
The right rate card must follow the agreement, not a remembered spreadsheet formula.
- 03
The variance needs review
A large change should be visible before the invoice reaches the client.
Usage-based billing for SaaS and MSPs
A usage-based billing platform for quantities you can inspect.
SaaS teams and managed service providers often bill for seats, devices or units used in a period. Invoicera bills those quantities once they are entered or imported as line items, applies the customer's rate card and combines them with fixed fees in one billing run. Usage-based billing is available on the Scale and Enterprise plans.
- 01
Usage-based billing for SaaS
Import the confirmed seat or unit counts for the period, and the plan fee and the usage line appear on one invoice.
- 02
Managed service providers
Bill devices or other units per customer from counts your team enters or imports, with a rate card for each agreement.
- 03
Where the quantity comes from
Invoicera does not collect raw events. Whatever system counts the usage, only the billing-ready total enters Invoicera.
How it works
Enter the quantity. Apply the rate. Review the result.
Invoicera starts from billable quantities already entered or imported as line items.
If the charge is entirely schedule-driven, use the recurring billing workflow.
- 01
Add the billable quantity
Enter or import the approved units, quantities or consumption as invoice line items.
- 02
Apply the rate card
Use the customer and charge terms that determine the price for that line.
- 03
Review the billing run
Combine fixed and usage-based components and route the outgoing invoice for approval.
A practical decision rule
The quantity boundary is the decision rule.
If the business needs raw event collection or real-time consumption pipelines, that work sits outside Invoicera’s usage-based billing scope.
For plans that repeat by customer, compare the subscription billing model.
Worked example
A fixed fee plus imported units
- Fixed monthly fee
- $1,500
- Imported units
- 2,400
- Rate
- $0.18
- Usage-based amount
- $432
Related decisions
Continue with the next relevant control.
outgoing approval pathFollow the related invoice decision→billing for MSPsFollow the related invoice decision→Industries
Billing by industry.
Explore billing by industry.
View all industries
Professional services
Control retainers, approved time, project work and client review before the invoice leaves finance.
View industry →
SaaS
Keep recurring periods, entered or imported quantities and renewal billing decisions visible.
View industry →
Construction
Turn accepted milestones, change orders and project billing checkpoints into controlled invoices.
View industry →
Logistics
Connect service records, rates, accessorial charges and customer requirements to outgoing billing.
View industry →
Legal
Keep the fee arrangement, reviewer and receivable path connected to the outgoing invoice.
View industry →Blog
Relevant reading for this decision.
Explore billing decisions.
View more articles
Billing operations · Sep 22, 2026
5 Common Project Billing Problems and How to Fix Them
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Billing operations · Sep 15, 2026
How to Simplify Complex Billing Without Replacing Your Business Systems
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Billing operations · Sep 9, 2026
Zoho Billing vs Invoicera: Which Fits Growing Businesses?
Read article →Customer perspective
What customers say about working with Invoicera.
My contractor business moved away from a manual invoicing process. Invoicera made invoicing simpler, which leaves me more time to help clients.
Late payments made cash flow difficult to manage. Invoicera gives me notifications when clients have not paid, so I can respond and keep the business moving.
Invoicera has streamlined our billing operations and helped us reduce manual effort. We particularly value its automation, ease of use, and professional invoicing experience. It’s a great solution for growing businesses, and we’re happy to recommend it.

Questions buyers ask
Know where this fits.
Each answer stands on its own, including the boundary of what Invoicera does and does not do.
What is usage-based billing in Invoicera?
Usage-based billing in Invoicera means billing on quantities, units or consumption entered or imported as invoice line items. The line item is linked to the appropriate rate card and remains visible during invoice preparation and review. Invoicera does not collect raw events or run real-time consumption-processing pipelines before that billable quantity exists.
Can usage-based and fixed charges appear on one invoice?
Yes. Invoicera can combine fixed and usage-based components in one billing run. A recurring fee, approved project amount and entered or imported quantity can appear together while each line retains the rule that produced it. Finance can review the complete invoice, its source values and rate treatment before it is sent to the client.
How are billable quantities added?
Billable quantities are entered by a user or imported as line items. They can represent units, quantities or consumption that has already been prepared for billing. The associated rate card then determines the charge. The source quantity and resulting amount remain available for finance to inspect during the review process.
Does Invoicera collect raw usage events?
No. Invoicera’s usage-based billing starts after the business has a billable quantity. Raw event collection, real-time consumption processing and event-stream infrastructure are outside the product boundary. If another system produces the approved aggregate, that quantity can be imported as line items and billed using the appropriate customer rate card after finance review.
Which plans include usage-based billing?
Usage-based billing on entered or imported quantities, and combining fixed and usage-based components in one billing run, are available on the Scale and Enterprise plans. Check current plan access on the pricing page before you plan a rollout.
Can a large usage change trigger review?
Invoicera supports approval routing and value thresholds for outgoing invoices. Finance can use those controls to review a billing run when a usage-based component changes the invoice value materially. The approver, action and timestamp remain attached to the invoice record so the decision is visible before the client sees it.
Start with the real billing case
Bring the schedule, exception or approval that is hardest to control.
See how Invoicera would run it without moving the ledger out of the system your finance team already uses.
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