CFDI in your purchase: the document that costs thousands and almost nobody explains
The CFDI is the digital invoice that proves what you paid. Without it, since 2014 the deed proves nothing before the SAT. Discover how this low-cost document protects tens of thousands of dollars.
The document that almost no one mentions at closing, and that protects tens of thousands of dollars
You looked at the property, negotiated the price, signed. At the closing table they talked about the deed, the trust, the SRE permit. Nobody mentioned the CFDI. Years later, when you decide to sell, you discover that the document nobody explained is the one that, precisely, defines how much tax you're going to pay.
This article is for investors in the Riviera Maya and Yucatán who want to protect the real value of their purchase from day one. It's not a sexy topic. It's the one that protects the most money.
What is the CFDI and why everything changed since 2014
CFDI = Comprobante Fiscal Digital por Internet (Digital Tax Receipt by Internet). It's the electronic invoice that the SAT requires to validate an economic transaction in Mexico.
In a real estate purchase, the CFDI is the document that certifies to the tax authority how much you really paid for the property.
Most foreign buyers never hear about it at closing. They focus on the public deed (the notarial act that formalizes ownership), on trust documents (if applicable), on the SRE permit for a foreigner to buy in a restricted zone. They sign. They file the deed as if it were the only paper that matters. And six, eight, ten years later, when they decide to sell, they discover that the cheapest and most decisive document of all was missing.
The rule change: December 31, 2013
From that date forward, the public deed alone ceased to be sufficient proof of acquisition cost before the SAT. The transaction must be backed by the corresponding digital CFDI. It's not a bureaucratic technicality. It changed which document "counts" fiscally.
The consequence is direct and brutal:
If you bought after 2013 and didn't keep the CFDI, the day you sell the SAT won't recognize your purchase cost.
Instead, it calculates your taxable gain as if the property had cost you zero.
How much does this error cost, in real numbers
Let's take a typical transaction in the Riviera Maya (Tulum, Playa del Carmen):
You bought an apartment for USD $500,000. You sell it years later for USD $700,000.
With CFDI USD $500,000 ≈ USD $200,000 (before deductions and inflation adjustment) Reasonable basis for ISR calculation Without CFDI USD $0 ≈ USD $700,000 Taxation on the entire sale, as if it had no costThe figures are illustrative. The actual calculation is determined by the notary in Mexican pesos, with inflation adjustment and according to the tax option that applies (25% vs. 35% ISR, depending on the case).
The difference in taxable base between one scenario and the other, however, is on the order of hundreds of thousands of dollars in excess taxable gain. For a document that cost a minimal fraction of the transaction at the time.
That's what separates a carefully managed purchase from a hasty one. It's not glamorous. It's what protects the most money.
Why the deed is no longer enough
The public deed is the notarial document that formalizes your ownership in the Public Property Registry. Proof of ownership. It's essential.
But since 2014, it's not sufficient proof to fiscally certify the cost of acquisition. The SAT requires that the transaction be recorded in the CFDI, the digital invoice, to validate "how much you really paid" as a deductible expense or cost basis.
A practical example:
- Purchase with deed: ✅ You own it.
- Purchase without CFDI: ❌ The SAT won't recognize your cost when you sell.
One thing is being the owner. Another is the tax authority recognizing what you paid. Since 2014, both require separate documents.
Who issues the CFDI and when
The CFDI must be issued by whoever sells you the property. In most cases, the developer, the builder, or the previous owner.
Critical point: It must be linked to your name or RFC (Federal Taxpayer Registry) as the buyer. If the transaction is structured through a trust, the CFDI can be in the trust's name, but it must be clear who the actual beneficiary is.
In resale transactions (previously owned property), the seller is obligated to issue it as proof of income. If they refuse, it's a red flag: they're hiding the transaction.
What you need to do to not lose it: practical checklist
1. Demand it from the start
Don't wait until closing. In your first contact with the seller or their representative, confirm that the CFDI will be part of the file. It's not optional. It's mandatory.
2. Verify that the details are exactly yours
Before any closing:
- Full name: exactly as it appears in your passport or ID.
- RFC: if you have one, it must be listed.
- Amount: must match exactly with the purchase price you sign (in pesos, adjusted to the current exchange rate if you paid in dollars).
- Issue date: must be the same date as the contract or deed.
A CFDI in another buyer's name, or with a different amount, won't protect you.
3. File it where you'll find it in 10 years
Not in an email lost among 500 messages. Create a single digital folder for each property containing:
- Public deed (PDF).
- Purchase agreement (PDF).
- CFDI of the purchase (PDF).
- Proof of payment (if you have it).
- Trust cover page (if applicable).
Store it on Google Drive, OneDrive, or a backed-up hard drive. You'll need it when you sell.
4. Confirm it before signing, not at closing
At closing, the notary brings everything: deed, identity documents, SRE permit. If at that moment you discover the CFDI isn't there or doesn't have your details, it's already too late to correct. That document must be ready days before.
5. If you already bought and aren't sure
Review your notarial file. Download a copy of your record from the Public Property Registry. Contact the broker or notary who handled the closing and ask explicitly: "Did you issue a CFDI in my purchase?"
If the answer is no, and you bought after 2013, it's worth arranging a tax solution now, not on the day you sell.
The case of the foreign buyer: particularities
If you bought as a foreigner without a Mexican RFC, who appears on the CFDI?
There are variations depending on the structure:
Option 1: Direct purchase in your name The CFDI is issued in your name (as it appears in your passport) and is linked to a foreign person code that the SAT can assign, or simply your residency is registered. The notary, in coordination with the seller, handles this part.
Option 2: Purchase through a trust The CFDI is issued in the trust's name (with its RFC), but the trust designates you as beneficiary in its constitutive documents. The notary must keep both papers in the file.
Option 3: Purchase through a corporation If you incorporated a Mexican commercial company to buy, the CFDI goes in that company's name (with RFC). The company appears as beneficiary on the CFDI, but you're a shareholder. This works, as long as it's documented.
In all cases, the notary is your main ally. Their responsibility is to ensure the CFDI is issued correctly and stays in the file.
Taxation: how the CFDI impacts your ISR when you sell
In Mexico, when you sell a property, you pay Income Tax (ISR) on the gain. The gain is calculated like this:
Gain = Sale price − Cost of acquisition (adjusted for inflation)
Without CFDI:
- Cost of acquisition = $0 (because the SAT won't recognize it).
- Gain = The entire sale price.
- ISR = Applied to 100% of the sale.
With CFDI:
- Cost of acquisition = What you really paid (in pesos).
- Gain = Difference between sale and purchase.
- ISR = Applied only to that difference (and with inflation adjustment that reduces the base even more).
The inflation adjustment is an important factor. If you bought 5 or 7 years ago, your cost is updated according to the INPC price index (National Consumer Price Index). That broadens the deduction and significantly reduces ISR. But this only works if the CFDI exists and the notary can prove it.
What if I already sold without a CFDI?
If you already completed the sale of a property without the SAT recognizing your purchase CFDI, the tax you paid was probably calculated on a cost basis of zero.
There is a path, though limited:
Consult with a CPA specialized in real estate. There may be options to rectify with the SAT through a request for correction of calculation basis, but it's subject to deadlines and procedures.
Gather supporting documentation: purchase agreement, proof of payment, bank references. Without CFDI it's harder, but not impossible to prove to an auditor that you did pay something.
Act fast. There are deadlines for these procedures. It doesn't get easier with time.
This is all the more reason to secure the CFDI from day one in your next purchase.
What's worth remembering
The CFDI is not a paper someone asks you for months after the purchase. It's a document that must be present at closing, along with the deed. No one will notify you when you need it. And by then it will be too late to get it.
In every purchase we support at Propyte, that receipt is secured and filed from day one, as part of the structured process, not as an extra or a "we'll see later."
Your next step
If you're considering a purchase in the Riviera Maya (Tulum, Playa del Carmen, Cancún) or in Mérida, or if you already bought and have questions about your CFDI, our tax and legal advisory team is here to help you.
At Propyte we accompany every transaction with rigor in documentation. José Benjamín Paredes (General Director, Playa del Carmen), Felipe Luksic (Commercial Director, Tulum), and the After-Sales team ensure that all papers, including the CFDI, are properly safeguarded.
Want us to review your situation or advise you before your next purchase? Schedule a conversation with one of our advisors with no commitment. We're experts in these transactions.
In the meantime, if you already own a property, review your notarial file today. The CFDI should be there.
Properties we support with tax rigor
At Propyte we develop residential projects where every purchase includes complete advisory on tax and legal structure. Learn about our options:
- Ancestral · Tulum · Lots from $299,000 — Base investment with documentation security.
- Narai · Tulum · Apartments and penthouses from $2,835,000 — Vertical project with luxury residence services.
- Sanam Residential · Tulum · Apartments from $2,890,000 — Private community with premium amenities.
- Aldea Savia · Tulum · Homes and apartments from $2,635,566 — Integration with the Mayan jungle.
- Yaxnáh Caucel · Mérida · Homes from $1,200,000 — Residential expansion in Yucatán.
- Dhamar Costa Mujeres · Cancún · Beachfront from $74.5M — Luxury residence in Costa Mujeres.
In each one, the CFDI is part of our support standard. Contact us today for a free consultation.