ITBMS Withholdings — Overview

Panama's DGI designates roughly 736 entities (Resolución 201-8055, 2026-2027) as ITBMS withholding agents. A designated agent withholds 50% of the ITBMS billed on each supplier invoice and remits it to DGI on the 15th of the following month via Formulario 4331. The supplier Reports the retained portion as a credit on line 52 of their Formulario 430.

CifraHQ handles both sides of this flow.

When you are the withholding agent

You pay your suppliers and CifraHQ automatically:

1. Calculates the 50% retention on every ITBMS-bearing line
2. Issues a numbered, branded PDF certificate
3. Emails it to the supplier (optional)
4. Posts the GL entries (reducing your AP by the withheld amount; crediting "ITBMS Withheld Payable")
5. Aggregates everything into a monthly Formulario 4331 that you upload to DGI's e-Tax 2.0

→ See Withholding Agent Guide.

When you are the supplier being withheld from

Your customer (the agent) sends you a retention certificate. You register it in CifraHQ and the system:

1. Matches it to your AR invoice + receipt automatically
2. Distributes the withheld amount across the invoice's ITBMS lines
3. Feeds line 52 of your Formulario 430 with zero manual entry

→ See Received Certificates Guide.

Administrator Setup

The tenant administrator enables the agent flag, configures the retention rate, GL accounts, certificate prefix, and CPA approval gate.

→ See Administrator Guide.

Monthly close

The Form 4331 close wizard validates that the GL matches the subledger, the period has no draft retentions, and (optionally) routes the close to a CPA for approval before locking.

→ See Period Close Checklist.

DGI compliance

The module is built against the legal framework summarized here, with citations.

→ See DGI Compliance Reference.