Check a Leitweg-ID
The check digits by the official method – before the invoice comes back.
To the toolFree tool
What billing actually costs
Zettel, minutes, hourly rate – and out comes how many hours a month hang on it and when a switch pays for itself. No sign-up, and not one figure reaches our house.
Hours saved per month
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After software cost, per month
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After software cost, per year
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Setup pays for itself in
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Without JavaScript the tool does not calculate. The method is shown below; pen and a pocket calculator get you to the same number.
How this is calculated – with your figures
- Field notes
– - Items
– - In money
– - Payback
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This counts data-entry time only. What a changeover otherwise costs – training, old data, the first weeks running two methods side by side – is not in here and belongs in the decision.
h
months
month
Not with these figures
No setup cost entered
In the first month
Cannot be calculated – needs a setup cost and a saving above zero
No bill of quantities entered – left out
The calculation runs in your browser. Nothing is sent to a server – not even your hourly rate.
Why there is no ready-made saving here
Most ROI calculators in this industry have the answer built in. You type in three numbers and out drops a saving that happens to argue for the software every time – because the factor that produces the saving sits in the script, not on the screen.
Here that factor is a slider: minutes per Zettel after the switch. The default of three minutes is an assumption from development – a Zettel that has been read is looked at, corrected and approved, not typed up again. It is not a measurement in a running firm, because there is not one yet. If you think the value is too optimistic, raise it; the calculator then works with the higher number and says correspondingly less. That is the point.
What the calculation does not include
It counts capture time and nothing else. It does not include the learning curve, the first weeks with two procedures running side by side, taking over the master data, or the time it costs to establish a new habit in a firm. Those items are real, but they occur once, while capture time comes back every month – which is why they sit in a separate field as “one-off setup” and not in the monthly figure.
Also not included: what a wrong or late invoice costs. An invoice the contracting authority rejects costs not only the correction but also the weeks until the next payment. That is hard to put in a slider, but it belongs in the same consideration.
When a switch does not pay off on paper
At twenty Zettel a month and five minutes of capture, that is a good hour and a half. No software earns its licence there, and anyone showing you otherwise is calculating wrongly. The calculation becomes interesting from the point where capture is a full working day a month – at eight minutes per Zettel, that is around sixty Zettel.
Two more things this calculation cannot do. It cannot show that the billing happens in the evening and at the weekend today, and therefore never appears in the hourly rate. And it cannot show that one person falls ill and nobody else knows how the folder is sorted.
Keep going
What helps next
E-invoicing obligation
Which date applies to you – and why the duty to receive already started.
To the toolWhat Levora costs
What to put into the cost fields above.
To pricingTest these numbers on your own Zettel
Bring a bill of quantities and a few filled-in Zettel. Half an hour is enough to see whether the calculation above works out for your firm.