Panama Fiscal Calendar 2026: Key Dates and Tax Obligations for Businesses

Panama Fiscal Calendar 2026: Key Dates & Tax Deadlines | JJ Associates

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Stay compliant in 2026. Complete guide to Panama's fiscal calendar ISR, ITBMS, Impuesto de Inmueble, Tasa Unica, and more. Avoid fines and plan your year strategically.

Running a business in Panama means staying on top of your tax obligations not just for compliance, but for strategic financial planning. The Direccion General de Ingresos (DGI) sets a clear schedule of filing and payment deadlines throughout the year, and missing any one of them can trigger automatic penalties, interest charges, and complications with your paz y salvo.

Whether you are managing a newly incorporated company, overseeing an established operation, or expanding into Panama for the first time, this guide covers every major fiscal deadline you need to know for 2026.

WHAT IS PANAMA'S FISCAL YEAR?

Panama's fiscal year follows the calendar year: January 1 to December 31. Companies with special fiscal periods (non-December closings) must file their income tax return within three months of their fiscal year-end. For the majority of businesses and individuals, however, all obligations are tied to the standard calendar year — which means 2025 income and operations are reported and settled throughout early 2026.

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KEY TAX DEADLINES BY CATEGORY

1. INCOME TAX RETURN (DECLARACION JURADA DE RENTAS ISR)

The annual income tax return is the most significant fiscal obligation of the year. It covers income, costs, expenses, and deductions from the prior fiscal year.

- Personas Naturales (Individuals): Deadline is March 15, 2026, for the 2025 fiscal period.

- Personas Juridicas (Legal Entities): Deadline is March 31, 2026, for companies whose fiscal year closes December 31.

- Companies with non-standard fiscal periods: Must file within three months following their fiscal year-end.

- Extensions: A one-month extension can be requested from the DGI before the original deadline.

- Platform: All filings are completed through e-Tax 2.0, the DGI's online portal. The system operates 24/7 and no in-person appointment is required.

Important: Companies that maintained an active Aviso de Operacion but had zero income during 2025 must still file a zero-income declaration. Failure to do so results in automatic fines.

Filing a corrected return (declaracion rectificativa) costs B/. 100 for individuals and B/. 500 for legal entities, per DGI regulations.

2. ITBMS — IMPUESTO DE TRANSFERENCIA DE BIENES CORPORALES MUEBLES Y LA PRESTACION DE SERVICIOS

Panama's equivalent of VAT, ITBMS applies at a standard rate of 7% on most goods and services (with some exceptions).

Monthly deadline: The 15th of every month, covering the previous month's transactions.

January 15 — ITBMS for December 2025

February 15 — ITBMS for January 2026

March 15 — ITBMS for February 2026

April 15 — ITBMS for March 2026

May 15 — ITBMS for April 2026

June 15 — ITBMS for May 2026

July 15 — ITBMS for June 2026

August 15 — ITBMS for July 2026

September 15 — ITBMS for August 2026

October 15 — ITBMS for September 2026

November 15 — ITBMS for October 2026

December 15 — ITBMS for November 2026

Filed via Formulario 430. Note: Each reporting period can only be corrected once. Ensure your electronic invoicing system (facturacion electronica) is fully integrated and reconciled before each filing.

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3. INFORME DE COMPRAS: FORMULARIO 43

The monthly Purchases Report (Formulario 43) must be submitted alongside your ITBMS declaration. It details all purchases made during the month and supports your input tax credits. Deadline: the last business day of the month following the reporting period.

This report is essential for sustaining your ITBMS credits during audits.

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4. PLANILLA 03: EMPLOYEE INCOME TAX WITHHOLDING REPORT

Employers must submit Planilla 03 monthly, reporting the ISR withheld from employee salaries. Per Resolucion 201-4853, this report is due within 60 calendar days following the corresponding payroll month. Corresponding payroll tax remittances are typically due on the 15th of each month.

Errors in Planilla 03 — such as mismatched cedula numbers or inconsistencies with CSS payroll records — can trigger audits and invalidate your labor records.

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5. IMPUESTO DE INMUEBLE: PROPERTY TAX

Property owners in Panama pay Impuesto de Inmueble in three annual installments. A 10% discount is available if the full annual amount is paid during January.

First installment: April 30, 2026

Second installment: August 31, 2026

Third installment: December 31, 2026

Discount: Pay the full annual amount in January 2026 to receive a 10% reduction on the total. Missing any installment deadline triggers an automatic 10% surcharge.

6. TASA UNICA ANUAL: ANNUAL CORPORATE FEE

All corporations registered in Panama's Public Registry must pay an annual Tasa Unica of $300.00. The deadline depends on the month in which your Articles of Incorporation (Pacto Social) were registered.

Pacto Social registered January–June: Deadline is July 15, 2026.

Pacto Social registered July–December: Deadline is January 15, 2026.

Late payment penalty: An additional $300 applies after the second mora period. Total liability can reach $900 for extended non-payment.

7. IMPUESTOS MUNICIPALES: MUNICIPAL TAXES

In addition to DGI obligations, businesses operating in Panama City must pay annual municipal taxes to the Alcaldia de Panama. A 10% early-payment discount is available for businesses that settle their full annual municipal tax during January 2026. Rates vary depending on the nature of your commercial activity.

8. CSS: CAJA DE SEGURO SOCIAL CONTRIBUTIONS

Employers must remit monthly CSS contributions (cuotas obrero-patronales) — covering social security, educational insurance, and professional risk premiums — by the last business day of each month following the payroll period. These contributions are submitted through the SIPE platform (Sistema de Ingresos y Prestaciones Economicas).

CSS Contribution Rates:

- Employee contribution: 9.75% of gross salary

- Employer contribution: 12.25% of gross salary

- Educational insurance: 1.25% (employee) + 1.50% (employer)

Failure to remit CSS contributions on time results in penalties and can affect employees' access to healthcare and retirement benefits.

9. ESTIMATED INCOME TAX PAYMENTS (PAGOS ESTIMADOS)

Companies are required to make three estimated income tax payments per year based on their projected annual earnings. These are generally scheduled for:

June 30, 2026

September 30, 2026

December 31, 2026

These advance payments offset the final ISR liability at year-end and help avoid large lump-sum payments in March.

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10. DECLARACION JURADA DE SUSTANCIA: SUBSTANCE REQUIREMENTS DECLARATION

Companies subject to Panama's economic substance regulations must file the Declaracion Jurada de Requerimientos de Sustancia within six months following the close of each fiscal period. For companies with a December 31 fiscal year-end, this means the deadline is June 30, 2026.

Authorities then have three additional months to issue a resolution confirming compliance or non-compliance. This resolution may be subject to reconsideration and appeal.

FULL CALENDAR SUMMARY 2026 AT A GLANCE

JANUARY

- January 15: Tasa Unica payment for companies with Pacto Social registered July–December (prior year)

- January (any date): Pay annual municipal taxes to receive 10% Alcaldia discount

- January 15: ITBMS (December 2025)

FEBRUARY

- February 15: ITBMS (January 2026)

MARCH

- March 15: ISR declaration — Personas Naturales (fiscal year 2025)

- March 31: ISR declaration — Personas Juridicas (fiscal year 2025)

- March 15: ITBMS (February 2026)

APRIL

- April 15: ITBMS (March 2026)

- April 30: First installment — Impuesto de Inmueble

MAY

- May 15: ITBMS (April 2026)

JUNE

- June 15: ITBMS (May 2026)

- June 30: Estimated ISR payment #1

- June 30: Declaracion Jurada de Sustancia (for December 31 fiscal year)

JULY

- July 15: ITBMS (June 2026)

- July 15: Tasa Unica — companies with Pacto Social registered January–June

AUGUST

- August 15: ITBMS (July 2026)

- August 31: Second installment — Impuesto de Inmueble

SEPTEMBER

- September 15: ITBMS (August 2026)

- September 30: Estimated ISR payment #2

OCTOBER

- October 15: ITBMS (September 2026)

NOVEMBER

- November 15: ITBMS (October 2026)

DECEMBER

- December 15: ITBMS (November 2026)

- December 31: Third installment — Impuesto de Inmueble

- December 31: Estimated ISR payment #3

MONTHLY (ongoing)

- 15th of each month: ITBMS declaration and payment

- Last business day of each month: CSS contributions (SIPE)

- Within 60 days of payroll: Planilla 03 submission

- Last business day of following month: Formulario 43 (Informe de Compras)

TIPS FOR STAYING COMPLIANT IN 2026

Know your RUC status. The DGI extended the deadline for RUC updates through December 31, 2025. Ensure your Registro Unico de Contribuyentes is fully updated before engaging in any 2026 filings.

Use e-Tax 2.0. All DGI declarations — ISR, ITBMS, and more — are processed exclusively through e-Tax 2.0. Create alerts in the platform and verify your account status regularly.

Integrate electronic invoicing. Panama's facturacion electronica system is mandatory for most businesses. Integrated invoicing makes ITBMS reconciliation faster and reduces declaration errors.

Hire a certified public accountant (CPA). Several filings — including the ISR for larger entities — must be signed by a licensed Contador Publico Autorizado (CPA). Professional oversight also helps you identify deductions and plan estimated payments accurately.

Build a fiscal calendar into your internal operations. Mark every deadline in your project management or accounting system, with at least a 10-day alert buffer. Penalties for late filing are automatic in Panama's digital tax system — there is no grace period.

HOW JJ ASSOCIATES CAN HELP

Navigating Panama's fiscal system is straightforward once you know the rules — but staying ahead of monthly, quarterly, and annual deadlines while running a business is a different challenge entirely.

At JJ Associates, we support companies and individuals with full-service tax compliance in Panama: from monthly ITBMS filings and CSS payroll reporting to annual ISR preparation and Tasa Unica management. Our team works across legal, accounting, and operational functions, so your fiscal obligations are covered in one place — with no deadlines missed.

Whether you are setting up a new company, managing ongoing operations, or expanding into Panama for the first time, we are here to guide you through every step.

Contact us at info@jj-associate.com to learn more about our accounting and tax compliance services.

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DISCLAIMER

This article is intended as a general reference guide. Deadlines and regulations are subject to change by the DGI. Always verify current dates on the official DGI portal at dgi.mef.gob.pa and consult with a licensed tax professional before making financial decisions.

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