Migrate from Rentila or Excel to Aluseg
Upload a Rentila export or an Excel/CSV sheet and Aluseg creates your properties, units, tenants, leases and, if you want, your paid rent history in one go.
- Preview before anything is saved
- Undoable for 30 days
- No duplicates
The essentials
Bring your portfolio without retyping anything
Switching tools should not mean retyping every property, tenant and lease. With Import portfolio, Aluseg creates everything at once.
One file, your whole portfolio
CSV or Excel (.xlsx) with one row per lease, or one row per payment to bring the history across.
Columns detected automatically
Common headers in Portuguese, English and French are recognised; you can remap any of them by hand.
Preview before anything is saved
See what will be created, what already exists and which rows have problems. Nothing is saved until you confirm.
All-or-nothing and undoable
No duplicates, all-or-nothing import, undoable for 30 days. Available on every plan, within that plan's limits.
How it works
Four steps to an imported portfolio
The wizard lives under Import › Whole portfolio (Rentila, Excel, CSV), or behind the Import from Rentila/Excel button on the properties page.
- 1
File
Pick Rentila, Excel, CSV or Aluseg template, upload the file and click Analyse file. You can download the CSV template from within the app.
- 2
Map columns
Aluseg suggests the most likely column for each field with a confidence level (High, Medium, Low). Required: address, tenant, rent and start date.
- 3
Preview
See the counts of new and reused properties, units, tenants, leases, and the payments. Rows to review lists errors (the row is skipped) and warnings (the value is left blank).
- 4
Import
One click saves everything in a single operation. The Portfolio imported screen links straight to your properties and leases, and to the Undo import button.
What gets imported
Each row creates at most one property, unit, tenant and lease
Before creating anything, Aluseg checks what your account already holds, so it never duplicates data.
Properties
Address, postcode, city, property type and matrix article (artigo matricial). Same address and postcode (ignoring case, accents and punctuation) count as the same property.
Units
The unit named on the row; with no unit, “Unidade 1” is created. Same unit label within the same property avoids duplicates; if a property already has several units, the row must say which one.
Tenants
One tenant per row: name, email, phone and NIF (validated). Same NIF, or without a NIF the same email, or without both the same name and phone, avoids duplicates.
Leases
Residential lease with rent, start, end, due day, deposit and payment method. Leases whose end date has passed come in as ended; active ones get the coming months' rent scheduled.
Rent history
With the Rent month, Amount paid and Payment date columns, each month is recorded as a paid rent period on the imported lease. A month repeated on the same lease is flagged.
Limits and safety
Rules for the file and the import
| Rule | In practice |
|---|---|
| Formats | CSV (“;” or “,” separator, detected automatically) or Excel .xlsx. The first row must hold the column titles. |
| Size | Up to 5 MB and 2,000 rows per file. Larger than that, split it into parts. |
| Excel | Only saved values are read: formulas are never executed. Password-protected workbooks are rejected until the protection is removed. |
| All-or-nothing | The import runs as a single transaction: either everything goes in, or nothing is saved. |
| Undo | For 30 days, Undo import deletes only what that import created. It is no longer possible once you have recorded payments, receipts or documents on that data. |
| Same file | A file that has already been imported cannot be imported again unless you undo the earlier import. The file itself is not stored. |
| Plan limits | If the import would exceed your plan's properties, units, tenants or active leases, the preview says “Your plan does not cover this import” and shows what is missing. |
After the import
The rest is a couple of clicks away
Once your portfolio is in Aluseg: connect the tax authority and issue electronic rent receipts with the Aluseg–AT integration, switch on rent collection by SEPA Direct Debit, and invite your accountant to the Accountant Portal for read-only access to rents and expenses.
And if you ever want to leave, the full data export hands everything back to you as a ZIP.
Plans
Which plans include it
Portfolio import is available on every plan, within that plan's limits.
| Feature | Free | Essential | Expert | Pro |
|---|---|---|---|---|
| Portfolio import | Yes | Yes | Yes | Yes |
| Properties | 1 | 5 | 20 | Depends on leases |
| Active leases | 1 | 5 | 20 | 25, 100 or 500 |
| Units per property | 1 | 5 | 100 | Same as Expert |
| Plan price | €0 | €7/month or €60/year, VAT included | €25/month or €199/year, VAT included | From €29/month + VAT |
Current limits are always on Pricing and in the Aluseg fact sheet.
Frequently asked questions
Migrating from Rentila or Excel
Can I undo the import?
Yes, for 30 days, with the Undo import button. We only delete the properties, units, tenants, leases and rent periods created by that import; data that already existed is left untouched. It is no longer possible once you have recorded payments, receipts or documents on that data.
Can I import my rent history?
Yes. Use one row per payment, with the Rent month, Amount paid and Payment date columns. Each month is recorded as a paid rent period on the imported lease. No accounting entries are created, and payments for leases that already existed in Aluseg are skipped.
Does the import work with a Rentila export?
The wizard automatically detects the most common headers in Portuguese, English and French, including the vocabulary Rentila uses. If a column is not recognised, map it manually in the Map columns step before previewing.
What if I import the same file twice?
Aluseg refuses a file that has already been imported unless you undo the earlier import. Within a new file, properties, units, tenants and leases that already exist in your account are reused instead of duplicated.
Is the import included in the Free plan?
Yes, it is available on every plan, within that plan's limits. If the file would exceed your plan's properties, units, tenants or active leases, the preview says so and nothing is saved.
For information only; not legal or tax advice. Last reviewed: 27 September 2026.
Bring your portfolio to Aluseg today
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