When switching from Excel to a CRM is worth it

A CRM (customer relationship management) is software that keeps every customer, contact, quote and follow-up in one shared place. Switching from Excel to a CRM becomes worth it when several people need the same up-to-date picture of your customers. This article shows the warning signs, a two-week pilot and how to clean your data before you import it.

Excel is a good place to start. Almost every office already has it, it costs nothing extra, and a sheet with names, addresses and phone numbers is quick to sort and filter. For a sole trader with thirty regular customers, one file is often all the customer data that is needed. Nobody has to learn a new program, and the whole list fits on one screen. You can email the file and add a column whenever you need one. Many owners keep such a sheet for years, and that is no mistake. The question is not whether Excel is bad, but whether it still does the job you ask of it.

Excel stops being enough when customer data lives in several copies and nobody can tell which one is current. Typical signs are duplicate entries, follow-ups that never happen and a status only one person knows. You can check this in ten minutes.

Take a painting company with twelve employees that keeps customer addresses, open quotes and job dates in three separate files. The owner sends a quote to a homeowner in March. The customer later calls to ask about the start date, but the call is noted only in the owner’s head. Nobody updates the quote file. Three weeks later the customer has hired another firm, and the owner hears about it by chance.

• The same customer appears twice with two different addresses.
• Nobody can say which quotes are still open.
• Follow-ups depend on one person’s memory.

With a spreadsheet you are in the minority: 91% of the companies Bitkom surveyed in 2024 use a CRM application to manage customer data digitally (Bitkom, 2024). Switching is therefore common practice, not an experiment.

Anyone who writes quotes, books jobs or answers customer calls needs the same current record at the same time. A shared file works for two people in one office. It gets messy when three people edit it from phones, laptops and a site office, because nobody sees who changed what.

Roles make the answer clearer than a list of names. The owner needs an overview of all open quotes. The office keeps addresses and appointments up to date. The site lead reads the customer history before a visit but does not need to edit it.

• Owner: all open quotes and revenue at a glance
• Office: addresses, appointments and callbacks
• Site lead: customer history before each visit

Time is the other cost. Salesforce reports that sales reps spend only 28% of their week selling, down from 34% in 2018 (Salesforce, 2022). The figure is global, not German, but it shows how little time is left for customers when information is scattered.

A pilot shows whether the switch helps before all your data moves. Pick one sales route with a few cases a week, such as quotes for interior painting, so that two weeks give you enough material to compare. Work only on that route in the new system for the two weeks. Keep everything else in Excel so the team does not learn the whole tool at once. Afterwards, compare the number of open quotes and missed follow-ups with the two weeks before. That turns a feeling into numbers.

1. 1

   Choose one sales route

   A clearly bounded path, such as quotes for interior painting.

2. 2

   Create only the fields you use

   Name, address, phone, job type, status and next follow-up date are enough to start.

3. 3

   Enter every new case in the CRM

   Set the old Excel files to read-only so nobody works in two places.

4. 4

   Review after ten working days

   Count the missed follow-ups and ask the team what slowed them down.

Messy data moves the mess into the new tool. Plan one or two afternoons for this, ideally with the person who uses the file most. The table lists common problems and the step to take before the import.

Keep each original file for at least a month after the import. If a number looks wrong, compare it with the source instead of guessing. A team that does not trust a number will not use the system, so the hour spent on clean data matters more than any setting afterwards.

Excel can stay when one person maintains the customer list alone, the list is short and nobody needs it on the road. A sole trader with a few repeat clients, or a shop that keeps only a mailing list, loses little by staying in a sheet. Review this every six months. If you have started keeping a second file for the same customers, it is time to switch.

The test is simple. If a forgotten callback could cost you a job, the list is more than a list. It is part of your sales process and needs a tool built for that purpose. If your three files look like the example above, get in touch. We will look at them with you before you decide on a first step.