Mexico has one of the most active electronic tax systems in the region. Almost every transaction produces a digital invoice, and the tax authority, the Servicio de Administración Tributaria (SAT), cross-checks invoices, payroll and bank information. Corporate law adds shareholder meetings and registers, and foreign-owned companies have a separate reporting channel with the Ministry of Economy.

This guide covers the sociedad de responsabilidad limitada de capital variable (S. de R.L. de C.V.) and the sociedad anónima de capital variable (S.A. de C.V.), the most common vehicles for foreign-owned subsidiaries, and notes where the simplified corporation differs. It is written for founders and for legal, finance and operations teams.

Updated November 9, 2026. Mexican rules change with the annual tax miscellaneous resolution, so use the dates below as the usual pattern and confirm them with the SAT.

Entity compliance Mexico: the quick answer

• File the annual income tax return (declaración anual) for the prior calendar year by 31 March. The 2026 deadline for most legal entities was 31 March 2026.

• Make monthly provisional income tax and VAT payments, generally by the seventeenth day of the following month, and file the monthly supplier information return (DIOT).

• Issue and receive electronic invoices (CFDI), and keep the electronic accounting records the SAT requires.

• Hold the annual shareholders' or partners' meeting to approve the financial statements and the use of profits.

• Report foreign investment to the National Registry of Foreign Investments (RNIE) when the company has foreign capital, and keep the beneficial controller information up to date.

What determines a Mexican company's compliance requirements?

The legal form, the tax regime and the foreign ownership shape the workload. An S. de R.L. de C.V. suits closely held subsidiaries and has lighter governance. An S.A. de C.V. is more flexible for share transfers. The simplified corporation (S.A.S.) is available for smaller businesses under limits.

The tax regime matters. Most operating companies are in the general regime for legal entities, while smaller companies may qualify for the simplified trust regime (RESICO) within revenue limits. Companies that import or export may have programs such as IMMEX, which the Ministry of Economy authorizes and which can be cancelled for tax non-compliance. Foreign ownership brings the investment registry, and in some sectors, limits on foreign participation.

Annual entity requirements in Mexico: the core checklist

1. Annual income tax return

Legal entities file the annual return for the prior calendar year by 31 March. The SAT confirmed 31 March 2026 for legal entities in the general regime, in the simplified trust regime and in the other business regimes, while non-profit legal entities had an earlier deadline of 16 February. Filing is electronic through the SAT platform. The return reconciles the monthly provisional payments, the deductible expenses and the tax credits, and it usually requires the digital invoice records to match the deductions. Late filing triggers fines and surcharges.

2. Monthly provisional payments and information returns

Throughout the year, companies make monthly provisional payments of income tax and file VAT returns, generally by the seventeenth day of the following month. They also pay over withholdings on salaries, fees and rent. The monthly DIOT reports supplier transactions, and electronic accounting files are sent monthly. Missing a month produces fines and can block the issuance of invoices.

3. Shareholders' meeting and corporate records

Mexican company law requires an annual ordinary meeting, within four months after year-end for a corporation, to approve the financial statements, the report of the managers and the distribution of profits. Quotaholders in an S. de R.L. follow the bylaws and the law. Keep the minute book, the register of shareholders or partners, and the register of capital variations. Changes in the legal representative, the bylaws or the shareholders are recorded in notarial acts and, where required, in the public registry.

4. Employee profit sharing

Mexican companies distribute 10 percent of taxable profit to employees, a mechanism known as PTU. The payment is generally made within 60 days after the filing date of the annual return, which falls at the end of May for companies. There are exceptions and caps, and the rules for outsourcing and specialized services changed in recent reforms. Ask your accountant for the current calculation.

5. Foreign investment and beneficial ownership reporting

Under the Foreign Investment Law, Mexican companies with foreign capital, and foreign persons doing business in Mexico, must register with the RNIE, which belongs to the Ministry of Economy. Those that exceed the thresholds in the rules must file an annual economic report and, in some cases, quarterly updates. The timing and thresholds are set by the Ministry's rules, so confirm them each year. Mexico also requires identification of beneficial controllers, and the SAT has issued rules on how legal entities report them. Keep the ownership chart and the identity documents ready.

Tax and indirect tax obligations

The corporate income tax rate is 30 percent, and the general VAT rate is 16 percent, based on commonly published rates. Mexico also applies withholding tax to payments abroad, including dividends, interest, royalties and some services, with reduced rates under tax treaties where the conditions are met. Transfer pricing rules apply to related-party transactions, with annual documentation and an informative return.

The electronic invoice (CFDI) is the foundation of deductions. A deduction without a valid invoice and proof of payment can be denied, and the SAT checks invoices against its blacklists of issuers that simulate transactions. Choose suppliers carefully, and keep payment evidence with each invoice.

Foreign-owned subsidiaries

Mexico is open to foreign investment in most sectors, with restrictions or limits in specific areas such as certain energy, transport and land activities. A foreign shareholder obtains a Mexican tax identification, and a corporate shareholder provides apostilled, translated documents. The company needs a legal representative with powers granted before a notary, and an electronic signature (e.firma) for tax filings. Dividends to foreign shareholders can attract withholding tax, subject to treaties and the company's profit accounts.

Employment structuring is regulated. The 2021 reform restricted the subcontracting of personnel, and companies that provide specialized services must be registered in a registry kept by the labor authority. Foreign groups should avoid using a shared-services employer without checking this regime.

First-year and event-triggered obligations

In the first year, the company is incorporated before a notary, registered in the public registry of commerce, obtains its tax registration (RFC) and electronic signature, opens a bank account, issues invoices, registers with the social security institute (IMSS) and the housing fund (Infonavit) if it hires, and registers with the RNIE if it has foreign capital. Decide the tax regime and the accounting system before the first invoice.

Events that trigger filings include a change of legal representative, a transfer of shares or quotas, a capital increase, a change of address, a merger and a dissolution. Each needs a notarial act and often an update with the SAT and the RNIE.

Employment and local requirements

Mexican labor law gives employees paid vacation, a vacation premium, a statutory year-end bonus (aguinaldo) paid by 20 December, and social security coverage. Employers register workers with the IMSS and Infonavit, pay contributions, and issue electronic payroll receipts. Written contracts, internal work rules, health and safety committees and a harassment prevention protocol are required. Collective agreements are common in some sectors. Many foreign-owned subsidiaries use a local payroll provider, with care about the specialized services rules.

Build a compliance calendar for Mexico

A compliance calendar turns the rules above into dated tasks with named owners. Start from the financial year-end and the incorporation anniversary, then add the recurring monthly and quarterly items. Review it each quarter, because deadlines, extensions and registry systems change.

• January to February: close the books, reconcile invoices and prepare payroll year-end reports.

• By 31 March: file the annual income tax return and hold the shareholders' meeting.

• Within 60 days after the return: pay employee profit sharing.

• Monthly by the seventeenth: provisional income tax and VAT payments, withholdings, DIOT and electronic accounting.

• Per RNIE rules: file the annual economic report and any quarterly updates.

• By 20 December: pay the year-end bonus.

Common mistakes

• Deducting expenses without a valid CFDI and proof of payment.

• Missing a monthly DIOT or electronic accounting filing.

• Forgetting the RNIE report when a foreign shareholder holds capital.

• Using a shared-services employer without checking the specialized services rules.

• Letting the e.firma or the legal representative's powers expire.

• Distributing dividends without checking the profit accounts and withholding.

Entity compliance Mexico: frequently asked questions

When is the annual tax return due for Mexican companies?

31 March for most legal entities, covering the prior calendar year. Non-profit entities had an earlier date in 2026.

What is the DIOT?

The monthly informative return of operations with third parties, which reports supplier transactions for VAT purposes.

Does a company with foreign capital need to register with the RNIE?

Generally yes, with the Ministry of Economy's National Registry of Foreign Investments, and larger investments file annual economic reports.

What is PTU?

The employee profit sharing of 10 percent of taxable profit, generally paid within 60 days after the annual return is filed.

Which company type do foreign investors use?

The S. de R.L. de C.V. and the S.A. de C.V. are the most common.

Is an electronic signature needed?

Yes. The e.firma is the electronic signature used for SAT filings and for signing tax documents.

How CoverPin can help

CoverPin helps finance, legal and operations teams track entity obligations across countries. See our international entities overview, learn about compliance advisory, or browse more guides in our legal and compliance resources.

This article is general information, not legal, tax or accounting advice. Confirm current requirements with the relevant authority or a qualified local adviser before acting.