There's a specific kind of dread that hits sometime in January or February, when you sit down to do your tax return and realise you've been meaning to update the rental income spreadsheet since October.
You know roughly what you made. You have vague memories of some expenses — the plumber in June, the new linen in September, the Airbnb service fees you're pretty sure you can deduct. But pulling it all together into something you can hand to an accountant? That takes an entire weekend.
It doesn't have to be this way.
Why rental finances are awkward to track
Airbnb and Booking.com give you earnings summaries, but they're not designed for bookkeeping. They don't know about your expenses. They don't separate your properties. They don't give you a profit figure — just a payout total, which is not the same thing.
Spreadsheets fill the gap but they require discipline. Every time money comes in or goes out, someone (you) has to open the spreadsheet, find the right tab, and enter it correctly. In a busy period, this slips. And once it slips for a few weeks, the spreadsheet feels so out of date that you put off updating it even more.
The result is a bunch of bank statements, a pile of receipts, and an accountant who sighs visibly when you arrive.
What you actually need to track
For a short-term rental, your basic records need to capture:
Income by property. What each property earned, in what month, and ideally from which channel. This matters for understanding your actual performance, not just total revenue.
Expenses by property. Every expense associated with each property — cleaning fees, supplies, maintenance, repairs, insurance, platform fees, mortgage interest if applicable, and any other deductible costs. Separated by property, not lumped together.
Receipts for everything. Tax authorities care about documentation. A bank statement line that says "hardware shop €47" is not the same as a receipt showing you bought materials to fix the rental property.
Payout dates and amounts. Airbnb and Booking.com don't pay you on the day of check-in. They have their own payout schedules. Knowing when money landed in your account matters for your accounts.
The expense categories worth setting up from the start
If you're starting fresh, build these categories into your tracking system:
Cleaning. Professional cleaning fees, laundry costs, cleaning supplies. This is usually one of your biggest recurring expenses.
Maintenance and repairs. Plumber, electrician, handyman, anything that breaks and needs fixing. Keep every receipt.
Furnishings and supplies. New towels, replacement kitchen items, welcome pack supplies, toilet paper in bulk. Small individually, significant over the year.
Marketing and platform fees. Airbnb and Booking.com take a percentage. Track this separately so you know your true revenue versus gross bookings.
Utilities. If you're paying utilities for the property (as opposed to guests paying their own), these are deductible expenses.
Insurance. Specialist short-term rental insurance is deductible. Standard home insurance usually isn't, or is only partially so — check with your accountant.
Mortgage interest. In many jurisdictions, the interest portion of your mortgage on a rental property is deductible. The capital repayment is not. Your accountant will want this split clearly.
Professional fees. Accountant, solicitor, property manager if you use one.
The receipt problem
Receipts are the worst part of this. They come from every direction — emailed, on your phone, printed on thermal paper that fades in three months, scrawled on the back of something else.
A few habits that actually help:
Photograph every paper receipt the same day. Don't leave it in your pocket. Don't put it in a pile. Take the photo immediately and file it somewhere you'll find it.
Set up a dedicated email folder for rental expenses. Any receipt that arrives by email goes straight in there — forwarded or filtered automatically. At tax time, it's all in one place.
Do a monthly reconciliation rather than an annual one. Fifteen minutes at the end of each month to check your records against your bank statement is dramatically easier than trying to reconstruct the whole year in February. You'll remember what things were in month one that you've completely forgotten by month twelve.
Tools that actually help
The goal is to reduce the friction between "expense happens" and "expense recorded."
Your bank app. Some banks let you tag transactions and add notes. This is not a bookkeeping system but it's better than nothing.
Dedicated apps. Apps like Hostdeck let you log income and expenses per property, scan receipts directly on your phone, and generate an export for your accountant at year end. This is much closer to what you actually need than a generic spreadsheet.
A proper accountant who specialises in short-term rentals. Worth the money. They'll know what's deductible in your jurisdiction, how to handle capital allowances, and whether you should be looking at a different business structure. The money you save usually covers their fee.
How to get caught up if you're behind
If you're reading this in September with nothing recorded since January, don't panic. Here's how to catch up without losing a weekend:
-
Get your bank statements for the year. Download them all. Every account that rental income goes into or that rental expenses come out of.
-
Get your Airbnb and Booking.com payout reports. Both platforms have downloadable earning summaries. This is your income record.
-
Go through bank statements chronologically. For each transaction, note: income or expense? Which property? What category? You might not remember the details for everything, but you'll remember most of it.
-
Collect any receipts you still have. Photograph them, match them to bank transactions where you can.
-
Flag what you can't reconcile. Some things you won't be able to document. That's okay — record what you can and note the gaps. Your accountant can advise on how to handle them.
-
Set up a proper system going forward. Once you've caught up, the goal is to never have to do this again.
The number that actually matters
At the end of the day, you want to know one thing: is this property making me money, and how much?
That means net profit — income minus all your genuine costs. Not gross bookings. Not Airbnb payouts. Net profit, per property, per year.
If you have two properties and one of them consistently earns more than the other, you want to know that. If a property had a great summer but the maintenance costs ate most of the profit, you want to know that. If the platform fees are higher than you thought, you want to know that.
Tracking properly gives you that picture. And that picture is what lets you make good decisions about your properties — not just in February when you're doing your tax return, but throughout the year.