Problem

Invoicing done manually in Excel

Key finding. Retyping invoices in Excel is not diligence, it is a process error. Invoices should come out of the operational system, not out of memory.

When invoices are built by copy-paste from the schedule into Excel, add-on work gets lost and the invoice run drags on for weeks. This article shows the switch.

Typical causes

  • Two separate systems

    Operations and finance do not talk to each other.

  • Add-ons live verbally

    Tickets end up nowhere and get forgotten.

  • No maintenance contract as data

    If the contract is not in the system, every invoice must be rebuilt.

How to diagnose

  1. 01

    1. Measure invoice cycle

    How long from month end to sending?

  2. 02

    2. Count corrections

    How many invoices were credited and reissued last quarter?

  3. 03

    3. Add-on share

    How much of revenue is add-on work?

Structural fix

  1. 01

    1. Contracts in the system

    Price, cadence and scope live on the site.

  2. 02

    2. Tickets as billable lines

    Every add-on lands automatically in the invoice run.

  3. 03

    3. Invoice run in one click

    Month end takes minutes, not weeks.

Common questions

What if invoices are very individual?
Extra lines can still be added per invoice. The base stays structured, only exceptions are manual.
Is proper invoicing software audit compliant?
Yes. Immutable archive, credit-note reissue for changes, audit-safe timestamps.

Related

Invoices from the system, not Excel

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Invoicing done manually in Excel · fix with proper invoicing software | Taskey | Taskey