Mexico estimates need CFDI-ready fiscal details before invoicing. Everhour turns approved billable work into invoices.
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A Mexico estimate helps you price work, describe scope, and collect approval before issuing a tax invoice. The estimate itself is a commercial document, while the tax invoice in Mexico is a CFDI. SAT states that CFDI version 4.0 has been the only valid version since April 1, 2023, so an approved estimate should already collect the data needed for that later document.
Use the estimate to show the seller, buyer, quoted services, expected delivery, price, taxes, currency, and payment terms. Add an acceptance line or approval note so the buyer confirms the scope before work starts. A clean estimate also protects you from rework when the buyer asks for the CFDI after payment or project completion.
Mexican CFDI invoices use RFC-based fiscal data. For CFDI 4.0, SAT identifies the minimum recipient data as RFC, recipient name, recipient tax regime, fiscal domicile postal code, and the fiscal use to be given to the invoice. Your estimate should request these fields before approval, especially for B2B work where the buyer expects a deductible invoice.
The issuer side also matters. CFF article 29-A and SAT CFDI 4.0 guidance require issuer identification, including RFC, name or business name, tax regime, and the place and date of issuance. Even though an estimate is not the certified CFDI, matching those details from the start keeps the final invoice aligned with the buyer's accounting records.
Each estimate line should describe the service or item in plain terms, with quantity, unit, description, unit value, and amount. Mexican CFDI line items also identify whether the concept is subject to tax, so the estimate should separate taxable, exempt, zero-rated, or special-treatment items instead of mixing them into one vague project total.
Mexico's indirect tax shown on invoices is IVA. The general IVA rate under Mexico's VAT law is 16%, while some transactions may be zero-rated, exempt, or subject to special treatment. Show IVA separately by rate where applicable, and avoid treating 16% as universal. Add the currency as MXN unless the buyer agreed to another currency, since CFDI includes Moneda and TipoCambio when applicable.
A one-off estimate template is enough for a small quote, a fixed-fee project, or a first draft that needs buyer approval. It gives you a clean document with scope, price, tax notes, and payment terms. It does not create the certified folio fiscal, SAT digital seal, or CFDI structure required for a valid Mexican tax invoice.
A managed workflow becomes useful once estimates come from tracked time, billable expenses, changing rates, or several client projects. Everhour Billing & Invoicing turns tracked billable time and expenses into invoices, calculates invoice amounts from rates while excluding non-billable work, and keeps invoice status visible after export to QuickBooks Online, Xero, or FreshBooks.
This content is for general information only, may not be fully up to date, and is provided without any warranty or liability.
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A Mexico estimate is not the same as a CFDI invoice. The estimate states proposed scope, prices, taxes, and terms before approval. A tax invoice in Mexico is a Comprobante Fiscal Digital por Internet, and valid CFDI documents follow SAT rules, CFF articles 29 and 29-A, and the Anexo 20 technical format.
A Mexico estimate should collect the buyer's RFC, legal name, tax regime, fiscal domicile postal code, and intended CFDI use. SAT identifies those as minimum recipient data for CFDI 4.0. Collecting them on the estimate prevents the common mistake of approving a quote with a trade name or incomplete fiscal address.
An estimate for Mexico should show IVA when the quoted transaction is subject to IVA. The general IVA rate under Mexico's VAT law is 16%, but some transactions are zero-rated, exempt, or receive special treatment. Separate IVA by rate where applicable, and label any tax treatment carefully so the later CFDI lines match the approved quote.
A Mexico estimate should state due date, payment schedule, accepted payment methods, and whether the buyer pays in full or by installments. SAT income invoices later use payment method and payment form codes, including PUE for full payment at issuance and PPD with form 99 for deferred or installment payment.
A Mexico estimate can use a foreign currency if the parties agree, but the document should state the currency clearly and explain how exchange rates apply. CFDI uses SAT's Anexo 20 structure and catalogs, including Moneda and TipoCambio when an invoice is issued in a currency other than Mexican pesos.
Everhour Billing & Invoicing converts tracked billable time and expenses into invoices. It calculates invoice amounts from rates, time, and billable expenses while excluding non-billable work, then exports invoices to QuickBooks Online, Xero, or FreshBooks with status, number, issue date, and amount synced back.
Convert billable time, expenses, and client terms into invoices without rebuilding approved work by hand. Everhour connects tracking, invoice generation, and accounting exports for cleaner billing.
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