Most safely through a Cartório de Registro de Títulos e Documentos, which serves it and certifies delivery; registered post with a return receipt (AR) or delivery by hand with the “Ciente” signed also work. What matters is being able to prove it arrived.

What deadline applies?

To pay a debt there is none in law; 10 days is usual. To leave: 30 days for a home lease extended without a term or running over five years and for a commercial lease without a term, 90 days for a buyer of a let property (Law 8.245/1991, arts. 46, 47, 57 and 8).

Do I have to write in Portuguese?

Only in the free-text fields, which say so: facts, months unpaid, how to pay and your own demand print exactly as typed. Everything else is written for you in Portuguese, including the amount in words. The amount can be typed the English way: 4,800.00, 4.800,00 and 4800 all print as R$ 4.800,00 (quatro mil e oitocentos reais).

Does the letter work out interest?

No. It asks for the sum “acrescido de correção monetária e juros de mora” (with monetary correction and default interest) without calculating figures. If you want to claim an updated total, type that total as the amount owed; it prints in figures and in words.

Is what I type uploaded?

No. The PDF is made in your browser and nothing you type leaves your device.

Is this legal advice?

No, it is a form. For a court case in Brazil you will generally need a lawyer.

Brazilian formal notice (notificação extrajudicial)

The formal letter before a Brazilian lawsuit, with the right article of law for each case.

Examples temporarily replace the input and settings. You can restore your previous work.

NoticeSender — nameSender’s CPF or CNPJSender’s addressRecipient — nameRecipient’s CPF or CNPJRecipient’s addressAmount owed (R$)Due date (optional)How to pay, in Portuguese (optional)Subject (optional; filled in for you)Facts, in Portuguese (optional; one paragraph per line)Deadline in days (empty: 10 to pay; the legal time to leave)Demand, in Portuguese (optional; replaces the standard one)Add the “Ciente” receipt for the recipient to signCityDate

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Example

Example: a freelancer in Florianópolis claims R$ 4,800 with a 10-day formal notice

Rachel Moore, an American designer living in Florianópolis, built a website for Pousada Exemplo Ltda. (both fictitious). The R$ 4,800.00 fell due on 15 July 2026 and was never paid. On 5 October 2026 she chooses Debt, fills in both parties with CPF or CNPJ and address, Amount 4,800.00, Due date 15/07/2026, How to pay “PIX para a chave rachel@exemplo.com”, and leaves the deadline empty.

The amount prints in figures and in words, the Brazilian way: “R$ 4.800,00 (quatro mil e oitocentos reais), vencida em 15 de julho de 2026”. Typing 4,800.00, 4.800,00 or 4800 gives the same line.
Because there was a due date, the letter says the debtor has been in default since that day (art. 397 of the Civil Code) and asks for the sum with monetary correction and default interest.
With the deadline empty, the usual 10 days apply: “no prazo de 10 (dez) dias contados do recebimento desta, mediante PIX para a chave rachel@exemplo.com”.
Then the consequence: legal and out-of-court collection, including protest and credit-bureau listing where applicable.

In the form	In the PDF (Portuguese)
Sender and recipient: name, CPF/CNPJ, address	NOTIFICANTE and NOTIFICADO(A), each “inscrito(a) no CPF/CNPJ sob o nº …, com endereço em …”
Subject left empty	Assunto: Cobrança de dívida
Amount 4,800.00, due date 15/07/2026	Item 1: R$ 4.800,00 (quatro mil e oitocentos reais), vencida em 15 de julho de 2026
No due date	“por esta, constituído(a) em mora” (art. 397, parágrafo único): the notice itself puts the debtor in default
Deadline empty	10 (dez) dias contados do recebimento
City Florianópolis, date 05/10/2026	Florianópolis, 5 de outubro de 2026.
“Ciente” receipt ticked	On the left, a line for the recipient to sign and date receipt

notificacao-extrajudicial-cobranca.pdf: one page in Portuguese with both parties, the debt, the demand to pay within 10 days, the consequence, city and date, Rachel’s signature on the right and the “Ciente” on the left. She signs it and has it delivered through a cartório or by registered post with a return receipt.

How it works

Choose the notice: debt, unpaid rent, notice to leave, or free.
Fill in sender and recipient with CPF or CNPJ and address, and the details of the case.
Check the deadline: to leave a property the law sets a minimum, and the PDF will not print less.
Download, sign and deliver it in a way you can prove: a registry office, registered post with a return receipt, or by hand with the receipt signed.

Frequently asked questions

How is it delivered?: Most safely through a Cartório de Registro de Títulos e Documentos, which serves it and certifies delivery; registered post with a return receipt (AR) or delivery by hand with the “Ciente” signed also work. What matters is being able to prove it arrived.
What deadline applies?: To pay a debt there is none in law; 10 days is usual. To leave: 30 days for a home lease extended without a term or running over five years and for a commercial lease without a term, 90 days for a buyer of a let property (Law 8.245/1991, arts. 46, 47, 57 and 8).
Do I have to write in Portuguese?: Only in the free-text fields, which say so: facts, months unpaid, how to pay and your own demand print exactly as typed. Everything else is written for you in Portuguese, including the amount in words. The amount can be typed the English way: 4,800.00, 4.800,00 and 4800 all print as R$ 4.800,00 (quatro mil e oitocentos reais).
Does the letter work out interest?: No. It asks for the sum “acrescido de correção monetária e juros de mora” (with monetary correction and default interest) without calculating figures. If you want to claim an updated total, type that total as the amount owed; it prints in figures and in words.
Is what I type uploaded?: No. The PDF is made in your browser and nothing you type leaves your device.
Is this legal advice?: No, it is a form. For a court case in Brazil you will generally need a lawyer.