Excel vs Software for Short-Term Rentals: when to switch and why.
Excel isn't the enemy. It's the first tool everyone uses and it works great for a few properties. But as soon as properties, sales channels, and variables grow, the system starts to crack. This is the honest comparison on when to move to dedicated software, and when staying on Excel is fine.
In sintesi
Choice threshold: under 2 units Excel is enough. From 3 to 10 units it's the gray zone (depends on the time and skills you have). Above 10 units, dedicated software pays for itself in 1-2 months.
The real issue isn't time — it's the margin. Excel systematically understates costs (VAT on commissions, business overhead like employees, rent, maintenance). Those who think they have a 30% margin, properly calculated, usually have 10-15%.
When NOT to switch: if you have 1-2 units, manage them personally, and bill less than €30,000 a year, Excel is the right choice. Invest in software only when the time recovered is worth more than the cost.
Comparison: Excel vs management-control software
| Aspect | Excel / Google Sheets | Dedicated software (e.g. Dott.House) |
|---|---|---|
| Software cost | €0 (Google Sheets) or ~€100/year (Microsoft 365) | €5-10/unit/month (Dott.House) |
| Sustainability threshold | Up to 2 units: great. 3-10: gray zone. | Pays for itself from 10 units in 1-2 months |
| OTA booking import | Manual (copy-paste or CSV export) | Automatic via PMS or CSV import |
| VAT on OTA commissions | Often forgotten, understates the real margin | Always included in the calculation |
| Operating margin calculation | Formulas to maintain by hand for each booking | Automatic for every imported booking |
| Annual management margin per property | Manual aggregation, complex pivots | Pre-calculated per property |
| Business overhead (employees, rent, maintenance) | Often excluded from the margin calculation | Pro-rated across each property |
| PDF owner statements | Must be built and formatted every month | A few clicks, configurable template |
| Property / period comparison | Manual pivots | Pre-built dashboard |
| Copy-paste errors / broken formulas | Frequent, discovered late | Eliminated at the root (code logic) |
| Backup / versioning | Only if enabled in Google Drive / OneDrive | Automatic, audit log included |
| Multi-user / team | Edit conflicts, rigid permissions | Granular roles |
| Italian tax integration | Handled separately | Italian tax-records portal (cassetto fiscale) integration with the Italian Revenue Agency |
| Scales with the portfolio | No, above 10 units | Yes |
Where Excel really fails (beyond calculation)
Knowing how to calculate a margin isn't enough. The real issue for a property manager isn't the formula — it's keeping the numbers up-to-date and consistent as the operation grows.
1. Update frequency
To be useful, the margin must be updated at least weekly. In Excel that means: downloading OTA exports, reconciling with costs, copying rows, updating formulas. As properties grow, this work no longer fits in the available hours and the sheets start to have temporal "gaps." The result: you make decisions on weeks-old numbers.
2. Formula fragility
Excel has three specific ways of breaking that hit property managers:
- Insert a column in the middle of a range, and formulas referenced by position break. You notice months later, when the margin doesn't add up.
- Overwrite a formula cell with a value. Excel doesn't warn you. The cell goes "silent."
- Accidental deletion. Without versioning, you rewrite the row from memory and almost always forget a cost item.
3. Consistency across properties and periods
When you manage multiple properties, each can easily end up with a slightly different sheet (extra columns, formulas modified for specific cases, costs categorized differently). Comparing margin across properties or periods becomes an archaeology exercise on the sheets. A dedicated system applies the same logic to all, always.
4. Producing owner statements
If you manage for third-party owners, you must produce timely and clear statements. In Excel: copy numbers from the sheet to the Word template, format, export to PDF, send. For each owner, every month. The classic activity that's manageable at 5 properties but takes half a day at 20. Read more: how to do the owner statement.
When NOT to switch (and that's fine)
We don't sell software to people who don't need it. Excel is the right choice if:
- You manage 1-2 units and they're all yours (not for third-party owners)
- Total annual revenue under €30,000
- You don't have to produce detailed periodic statements
- Excel is still under control: sheets are updated, formulas work, you have time to maintain it
In these cases, even perfect software would be over-engineering. Invest in a dedicated system when the 4 issues above (frequency, fragility, consistency, statements) start weighing on available time or decision quality. The rough threshold: above 10 units the software pays for itself in 1-2 months.
How to decide if it's time
Three practical questions:
- How many hours a week do you spend in Excel managing your properties?
- How many times in the last 3 months have you had to redo a calculation because a number didn't add up?
- Can you say with certainty which is the most profitable property in your portfolio right now?
If the first grows month over month, the second is greater than zero, and the third is "no," it's probably time.
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