How to Update Your RTU at SAT Guatemala 2026 (Free, Via Agencia Virtual)

TL;DR: Updating your RTU (Registro Tributario Unificado) at SAT is 100% free and 100% online via Agencia Virtual. The RTU never expires — what you update are data points that changed (address, business activity, phone, email, tax regime). After confirming, you can immediately download your updated RTU certificate as a PDF.

When you need to update your RTU

If none of that changed, you don’t need to “update” — your RTU stays valid automatically.

Cost: Q0 (free)

Updating the RTU is free. SAT does not charge for:

• Address change
• Adding or changing business activity
• Phone or email update
• Tax regime change
• Any data correction

The only thing that can carry a cost related to your tax registration is the initial NIT issuance in some special cases (foreigners, companies with notary filings) — but updating an existing RTU is always free. If a gestor charges you Q200-Q500 to “update your RTU,” that is their service fee, not a SAT tax.

Required documents

If you go in-person to a SAT office, bring everything in original + photocopy. For online updates via Agencia Virtual, most changes don’t require file upload — you just confirm inside your authenticated session.

Step-by-step: updating the RTU online (Agencia Virtual)

Step 1 — Log into Agencia Virtual

1. Open agenciaVirtual.sat.gob.gt
2. Log in with NIT and password
3. If the system requests a verification code, it arrives by email or SMS at the current contact registered in your RTU

If you changed phone or email and can’t receive the verification code, call SAT’s line 1550 or visit a SAT office in person with your DPI. Once you recover access, the rest can be done online.

Step 2 — Find the update module

Inside Agencia Virtual:

1. Side or top menu → “Mis Datos” (some portal versions list it under “Servicios”)
2. Click “Actualizacion de Datos del RTU”
3. The system shows your current data on file

Step 3 — Pick the data to change

The module lets you select which block to update:

• Fiscal address (primary address)
• Establishments (additional offices or locations)
• Business activities (CIIU / SAT activity catalog)
• Contact data (phone / email)
• Tax regime (with explicit SAT confirmation before applying)
• Trade name (if applicable)

Step 4 — Enter the new data

1. Fill in the new information
2. Check that address, zip code, and municipality match your proof document
3. For business activities, choose the SAT catalog code closest to what you actually do (if your real activity isn’t listed, choose the broadest option that includes it — and consult an accountant before major changes)
4. Click “Continuar” or “Guardar”

Step 5 — Confirm and sign

1. The system shows a final summary of the change
2. Confirm with your date of birth or the second factor configured in your account
3. Click “Aceptar” / “Confirmar Actualizacion”

Step 6 — Download your updated RTU

1. SAT immediately shows the new RTU certificate with the changed data
2. Download the PDF (or use Print RTU)
3. Save it — this is your proof of the change for banks, contracts, and institutions

Alternative: in-person at a SAT office

If you can’t access Agencia Virtual or the change requires physical validation:

1. Visit any SAT office (full list at portal.sat.gob.gt)
2. Bring your DPI (original + copy) and supporting documents for the change
3. Take a queue ticket → Atencion al Contribuyente module
4. The agent processes the change on screen with you
5. They issue an updated certificate (this can take 3-5 business days at some agencies)

Update vs Renewal vs New Registration — disambiguation

If you googled “renew RTU” or “RTU expired,” what you actually need is to update an outdated data point. See RTU expired myth for the full breakdown.

Common mistakes

1. Confusing RTU updates with annual ISR filing. They are separate. RTU updates happen when something changes; the annual ISR filing has mandatory deadlines and applies even when nothing has changed in your RTU.
2. Waiting for a SAT notice to update. The obligation is proactive — SAT won’t warn you before an audit. Keep things current as you go.
3. Incomplete address documentation. An old utility bill or an unsigned lease may not qualify. Use documents from the last 3 months when possible.
4. Not re-checking your regime after the change. Switching regime impacts VAT, ISR calculations, and whether you owe the Informe Electronico de Compras y Ventas (IECV) for Especiales. Confirm with your accountant.
5. Forgetting to update email / phone. SAT uses these channels for verification codes and notifications. If they go stale, you lock yourself out of the portal.

Diaspora — updating the RTU from abroad

Agencia Virtual works from any country. For Guatemalan diaspora:

• Email and phone: update online, no documents needed.
• Address in Guatemala: keep a family member’s address on file or use a gestor for fiscal mail.
• Business activity: if you still operate or own a business in Guatemala from abroad, make sure your regime still fits.

Tip: if you’re planning to travel back to Guatemala, update your email and phone before your flight so you don’t land without Agencia Virtual access.

When to call 1550 or go in person

• Can’t access Agencia Virtual (lost password + outdated contacts)
• The system doesn’t show the “Actualizacion de Datos del RTU” module
• Complex regime change (consult an accountant first, then do the online update with the decision made)
• Discrepancy between what RTU shows and what your bank or a client reports

SAT phone: 1550 in Guatemala. At regional offices: bring DPI + NIT.

Related

• Print RTU from USA — download your certificate (free, online)
• RTU expired myth — what people actually mean when they say “RTU vencido”
• Register for RTU at SAT — initial registration
• Apostille documents from USA — pairs with RTU for diaspora paperwork
• All SAT tramites