Peru Now Requires Electronic Invoicing From Day One: What New Businesses Must Get Right

You register your RUC on a Monday morning, open your doors that afternoon, and make your first sale before sunset. Under Peru's new rules, that very first sale must be documented with an electronic receipt — there is no grace period, no paper starter pack, and no "we'll set up invoicing next month." If your issuance system is not ready when your business is, your first day of trading is also your first day of non-compliance.

That is the core of the change SUNAT put into force on June 1, 2026: taxpayers who register in the RUC under the main income-tax regimes become electronic issuers the same day they register. This guide explains who the rule covers, which documents it reaches, how it connects to the SIRE electronic ledgers, and the launch checklist that keeps a new business compliant from sale number one.

What Changed on June 1, 2026​

Superintendency Resolution No. 000075-2026/SUNAT, issued April 29, 2026, rewrote the timetable on which taxpayers acquire electronic-issuer status. Before this rule, newly registered businesses typically had a window between RUC registration and the date their electronic-issuance obligation began — time many founders used to choose software, get credentials, and train staff. That window is now closed.

The new timetable works like this:

• New RUC registrants who select the MYPE Tax Regime (Régimen MYPE Tributario), the Special Income Tax Regime (Régimen Especial), or the General Regime (Régimen General) in their "tributos afectos" section become electronic issuers on the same day they register. The obligation covers electronic payment receipts (comprobantes de pago electrónicos, or CPE): facturas, boletas de venta, and the electronic credit and debit notes tied to them.
• Businesses leaving the Nuevo RUS (the simplified single-payment regime for the smallest taxpayers) face an accelerated clock too. Once you stop appearing in the RUC as a Nuevo RUS taxpayer and start carrying out operations that require electronic receipts, the obligation begins on the first calendar day of the following month.
• The SIRE ledgers move with you. Taxpayers who acquire the obligation to keep the Electronic Sales and Income Register (RVIE) and the Electronic Purchases Register (RCE) must keep them through SUNAT's Integrated System of Electronic Records (SIRE) from the moment that obligation arises.

The policy direction is unmistakable, and it matches what tax agencies across Latin America are doing: fiscal information should exist from the moment the transaction happens, not weeks later when someone gets around to recording it.

Factura or Boleta? Issuing the Right Document From the Start​

Day-one issuance only helps if you issue the right document. Peru's two workhorse receipts serve different customers, and mixing them up is one of the most common new-business errors:

• Factura electrónica — issued when your customer is a business with a RUC that needs to claim the IGV (general sales tax) credit and deduct the expense. It identifies the buyer by RUC and breaks out the tax. If you sell to companies, this is your default.
• Boleta de venta electrónica — issued to final consumers, typically individuals without a RUC. It does not support an IGV credit for the buyer. If you run a retail shop, restaurant, or consumer service, most of your volume will be boletas.
• Notas de crédito y débito electrónicas — electronic credit and debit notes that adjust facturas and boletas after issuance: returns, discounts granted after the fact, billing corrections, and price adjustments. They must be linked to the original receipt they modify.

A practical rule for launch week: configure your issuance system with both document types before your first sale, and make sure whoever operates the register or sends the invoice knows which customer gets which document. Reissuing a boleta as a factura because a business customer asked after the fact is avoidable rework — and every correction leaves a paper trail SUNAT can see.

Businesses that move physical goods should also confirm whether they need the electronic waybill (guía de remisión electrónica). It follows its own designation timetable, but a new distributor or e-commerce seller that overlooks it can have merchandise held up over paperwork while the sales side runs perfectly.

The SIRE Connection: Why Your Invoices Now Pre-Fill Your Tax Ledgers​

The resolution deliberately tightens the link between issuing receipts and keeping electronic ledgers. Here is how the loop works:

1. Every CPE you issue (and every one your suppliers issue to you) flows into SUNAT's systems.
2. SIRE uses that data to build automatic draft proposals of your Sales and Income Register and your Purchases Register each month.
3. You review the proposal, complete or correct it, and accept it — and that accepted register feeds your monthly IGV–income tax return.

For a new business, this has a sharp implication: the quality of your SIRE drafts is bounded by the quality of your issuance. Issue every receipt on time, with correct customer data and amounts, and your monthly proposal will be close to complete. Miss receipts, issue them late, or enter wrong RUC numbers, and every month starts with detective work to reconcile what SUNAT thinks you sold against what you actually sold.

Treat the SIRE proposal as a free monthly reconciliation report rather than a chore to click through. A line you do not recognize may be a supplier who invoiced you in error; a missing purchase may be a receipt issued with the wrong buyer RUC. Catching these in the proposal month is a five-minute fix. Catching them a year later, during an audit or a credit application, is a project.

Your Launch Checklist: Be Issuance-Ready Before Your First Sale​

Because the obligation starts the day you register, the setup sequence matters. Arrange these before you file your RUC registration, not after:

1. Get your Clave SOL. This is your SUNAT online credential, and every free issuance channel runs through it. Complete identity verification early — it is the one step with a processing delay you cannot control.
2. Choose your issuance channel. SUNAT offers free options — the SEE-SOL web portal, the downloadable Facturador SUNAT, and the mobile app — which are enough for many freelancers and micro-businesses. Higher-volume sellers, multi-branch retailers, and businesses that need issuance integrated with inventory or e-commerce typically contract an authorized Electronic Services Operator (OSE) or use certified issuance software (PSE). Decide based on your expected monthly receipt count, not on day-one volume.
3. Configure document series and test them. Set up your factura and boleta series, issue test receipts, and verify they validate. Confirm that credit and debit notes link correctly to the originals.
4. Map issuance to your sales flow. Decide exactly when the receipt is generated: at checkout, on shipment, on payment confirmation. "The accountant does it at month-end" is no longer a process — the receipt must exist when the transaction happens.
5. Assign responsibility and a backup. Name the person who issues receipts and one backup who can do it when they are away. Most missed-issuance violations trace back to "the usual person was on leave."
6. Plan your monthly SIRE review. Put a recurring date on the calendar to review and accept the RVIE and RCE proposals before the filing deadline. New businesses should do this in the very first month, even if activity was light, to confirm the loop works end to end.

Six Mistakes New Issuers Make​

1. Selling on paper "just for the first few days." Once you are an electronic issuer, paper receipts generally do not satisfy the obligation. A stack of handwritten boletas from opening week is evidence of unissued electronic receipts, not a substitute for them.

2. Assuming a grace period exists. It does not — not for issuance. SUNAT has granted penalty relief in adjacent areas (more below), but the duty to issue from day one is the rule itself.

3. Issuing everything as boletas. Fast, but wrong for business customers, who will come back demanding facturas for their IGV credit. Each reissue doubles your work and litters your ledger with corrections.

4. Ignoring the SIRE proposal until filing day. Accepting the draft blindly books errors into your official registers; ignoring it until the deadline turns a review task into a fire drill. Review early in the month.

5. Letting supplier receipts drift. Your Purchases Register proposal is built from receipts issued to you. If a supplier consistently gets your RUC wrong, your input credits are at risk. Chase corrections in the same month.

6. Treating issuance software as "set and forget." Certificates expire, SUNAT updates validation rules (several new CPE validations postponed from August 2026 take effect January 1, 2027), and integrations break silently. Check validation status weekly in your early months.

Penalties — and the Relief Window You Should Not Misread​

Failing to issue electronic receipts is an infraction under numeral 1 of article 174 of the Tax Code, punishable by fines and even temporary closure of the business premises. SUNAT runs verification campaigns specifically targeting issuance compliance, and a newly registered business with no CPE traffic is easy to spot.

There is currently penalty relief in force, but read its scope carefully: through Resolution No. 000041-2026/SUNAT, the agency is exercising discretionary non-application of sanctions for electronic-books formalities — infractions around keeping books without meeting formal requirements and omissions in SIRE records — for filing periods from August 2026 through January 2027, with an extended correction deadline. That relief covers the ledgers, not the underlying duty to issue receipts. Skipping issuance because "fines are suspended" misreads which fines are suspended, and the correction deadlines still require you to fix your registers.

The sensible posture: issue from day one, keep your SIRE registers clean, and use the relief window for what it is — breathing room to correct ledger formalities while you learn the system, not permission to postpone compliance.

Keep Your Internal Books Aligned With What SUNAT Sees​

When every sale you make and every purchase your suppliers report lives in SUNAT's database, your internal bookkeeping stops being a private record and becomes a mirror you must keep polished. The businesses that struggle under day-one e-invoicing are rarely those with complex operations — they are the ones whose internal records drift from the CPE data, so every SIRE month and every audit starts with unexplained differences.

Build one simple discipline from the start: every electronic receipt issued or received gets recorded in your own books promptly, with the same date, amount, and counterparty the CPE carries. Reconcile monthly — your sales ledger against issued CPE, your purchases against received CPE — before you accept the SIRE proposal. The ten minutes this takes for a new business saves the forensic reconstruction that founders of older businesses describe as their worst tax-season memory.

Plain-text accounting fits this discipline well: every transaction is a readable, version-controlled entry you can diff against SUNAT's proposal line by line. If you want to see your invoicing, expenses, and cash position in dashboards as the business grows, Fava's charts and reports turn those same entries into visual statements without re-entering anything. And the documentation walks through setting up a ledger from scratch — a fitting day-one companion to a day-one issuance obligation.

Keep Your Books Audit-Ready From Day One​

Peru's message to new businesses is clear: your fiscal life starts the day you register, and your invoicing, ledgers, and tax data are one connected system from that moment on. Meet that standard with internal records that are just as rigorous — complete, timely, and reconcilable against everything SUNAT already knows about you. Beancount.io provides plain-text accounting that gives you complete transparency and control over your financial data — no black boxes, no vendor lock-in. Get started for free and launch your business with books that are ready for anything SUNAT asks.