Estimate the investment for the e-invoicing mandate – from ERP connection to Peppol and GoBD archiving.
E-invoicing cost calculator
The E-Invoicing cost calculator provides an immediate, non-binding cost range without requiring an email address or registration. It combines your project inputs with documented calculation rules and experience from more than 250 software projects.
Use the calculator right below for an instant first estimate – no sign-up and no fixed-price commitment. We align scope, risks, and assumptions in a conversation before a binding quote.
The calculation follows six visible stages. All figures remain planning values until scope and assumptions have been reviewed.
1. Capture inputs
The calculator records the visible project, volume, complexity and operating parameters selected on this page.
2. Add fixed components
Fixed base modules and selected add-ons are added without mixing them with recurring charges.
3. Apply multipliers
Quantity, complexity and scope factors multiply only the cost components identified for them in the calculator model.
4. Create the range
The calculator applies its documented lower and upper uncertainty factors to the base result; ROI views keep investment and savings visible separately.
5. Round and calibrate
Monetary result fields are rounded to the nearest whole euro. Public project-cost components are calibrated with the centrally maintained display factor.
6. Classify the result
The result is shown as non-binding guidance. A binding quote requires scope, data, integrations, risks and acceptance criteria to be reviewed.
Efficiency or discount factor: A central display factor of 0.7 is applied to public project-cost components to keep all calculators aligned with the currently reviewed pricing basis. It is not a customer-specific discount; customer-entered wages, revenues and existing operating costs are not reduced.
Why this is not a binding quote: The calculator cannot verify complete requirements, third-party dependencies, data quality, legal constraints or acceptance criteria.
Costs for E-Invoicing depend on scope, risk, and quality expectations. The calculator provides an initial range.
We quote transparently with dedicated contacts from East Frisia.
Concrete project profiles with assumptions and indicative budgets—useful for internal alignment alongside the calculator.
FAQ
Since 1 January 2025 all domestic B2B companies must be able to receive e-invoices.
Mandatory issuing follows in stages: from 2027 for companies above EUR 800k prior-year revenue, from 2028 for everyone. Paper and plain PDF invoices lose their validity in B2B.
XRechnung is pure structured XML and the standard for public-sector clients.
ZUGFeRD embeds XML inside a human-readable PDF and works well for B2B exchange. Both comply with EN 16931 – the right choice depends on your customers and system landscape.
For a handful of invoices, yes.
At any relevant document volume, media breaks and errors add up. The economic answer is direct integration into your ERP or accounting system with validation and archiving built in.
Integrate e-invoicing properly
We connect XRechnung and ZUGFeRD directly to your ERP or accounting stack.
The e-invoicing cost calculator gives EUR 2,678 – 88,070 excl.
VAT as its non-binding overall range. Existing ERP modules sit closer to the lower end; custom software, multiple connected systems and dedicated interfaces increase the effort.
Yes.
German GoBD rules require the unaltered, machine-readable XML to be archived for the statutory retention period – a PDF-only archive is not sufficient for XRechnung.
| Model | When it fits | Budget & flexibility | Typical risks |
|---|---|---|---|
| Fixed price (fixed scope) | Clearly defined scope, stable requirements, repeatable delivery. | Predictable total cost; little room for change without a change order. | Scope creep leads to change orders or quality trade-offs. |
| Time & Material | Discovery, legacy, evolving requirements, or close collaboration. | Maximum flexibility; budget transparent via hourly or daily rates. | Without prioritisation, effort can grow—backlog and reviews matter. |
| Retainer / maintenance package | Ongoing operations, updates, small features, and support. | Agreed capacity per month; predictable follow-on cost. | Large changes may still need a separate estimate. |
| Hybrid (milestone + T&M) | MVP or phased releases with clear go-lives, then iterate. | Core delivery fixed price; extensions on a time-and-materials basis. | Define contractually what is in scope vs. extra work. |
Calculators on this page provide indicative ranges; we choose the right model with you based on risk, scope, and planning horizon.
The ranges shown are indicative. For a binding quote we discuss scope, priorities and funding options in a free intro call. Many digitalization projects qualify for grants – try our funding calculator.
Browse all cost calculators, explore services and typical solutions. Questions about E Invoicing? Contact us.
After using the E Invoicing calculator, validate assumptions in a short intro call.
Browse all cost calculators in the costs overview.
What does the integration cost?
Interactive estimate based on your inputs.
Non-binding project range from the software cost calculator: EUR 10,332 – 372,623 excl. VAT.
Methodology: The estimates are based on historical project data, complexity drivers and standard implementation assumptions. Results are a non-binding indication only; effort and price must be calculated individually.
If you are still deciding
If you are ready to implement
Calculator overall range
EUR 5,600–112,000 excl. VAT, depending on audit and compliance depth
The overall range is derived from the valid parameters of the relevant cost calculator.
Typical duration
2–12 weeks
Main risk drivers
Non-binding indication
This result is only a non-binding indication based on typical assumptions. Effort and price must be calculated individually for your project.
A transparent four-step process for validating the E-Invoicing indication with concrete requirements.
1. Confirm scope and target outcome
We clarify the business outcome, user groups, and boundaries relevant to E-Invoicing.
2. Review data, interfaces, and risks
We validate integrations, data quality, security, compliance, and operational dependencies.
3. Check the calculator assumptions
We compare the selected parameters with the real system landscape and document deviations.
4. Prepare the precise quote
You receive a scoped proposal with milestones, exclusions, price model, and next decision point.
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