For Philippine firms on Juan

The close, and the BIR work around it: invoices checked against the rules, every return tracked, withholding priced, and audit exposure screened.

Break an invoice. Watch the rules catch it.

Every supplier invoice is checked against the BIR's invoicing rules before it reaches Juan, so a missing TIN or VAT line is caught while the supplier can still fix it. Click any part of this sample to remove it.

Click any part of the invoice to remove it.
Linea Print Services Inc.
Unit 4, Sample Building, Clark Freeport Zone, Pampanga
VAT Reg TIN 123-456-789-00000
INVOICE
No. 0004417
Date: 14 October 2026
Sold to: Calderon Studio Inc., 22 Sample Street, Angeles City. TIN 987-654-321-00000
DescriptionQtyUnit costAmount
Brochure printing, A4, both sides50018.009,000.00
Layout and design12,200.002,200.00
VATable sales11,200.00
VAT (12%)1,344.00
Total amount due, VAT inclusive12,544.00
Sample invoice. Names and TINs are examples.
Passes these nine checks. Mendiola sends it to Juan as a draft.
  1. Word "Invoice" on the faceA1
  2. Seller registered name per BIR Certificate of RegistrationB1
  3. VAT-status statement + TIN + Branch CodeB2
  4. Buyer name/address/TIN for sales of ₱1,000 or more to a VAT-registered buyerC3
  5. Date of transactionD1
  6. Serial number printed prominentlyD2
  7. Quantity, unit cost, and descriptionD3
  8. Total amount of sale (VAT-inclusive indication for VAT sellers)D4
  9. VAT shown as a separate itemE1

Nine of the 52 rules Mendiola applies to each supplier invoice of a company whose admin has switched vouching on, shown word for word as the product holds them. See all 52.

Juan stays your ledger

Your clients' books stay in Juan. Mendiola reads them, and writes only drafts and the changes a person approves.

Rules you can check

Every BIR invoice rule is kept as data and cites the law it comes from, so a reviewer can check the rule as easily as the invoice. Read all of them, and the close, step by step.

Screens, not findings

Audit risk and audit readiness say what the BIR could select or match. Every amount is labelled an estimate, and nothing is presented as a finding of fact.

Made in Clark

Mendiola is built in Clark Freeport, Pampanga, by a team that has worked inside Philippine and US practices for more than a decade.

What your firm gets

Labelled from our own release records. Early access means it is in production and we switch it on for your firm.

Documents to Juan

Documents

Clients' bills and receipts arrive from their Drive folders or by upload. Mendiola reads each one and sends it to Juan as a draft for your team.

Available

Close monitoring and sign-off

Closing

Every client's period on one board: open, review requested, in review, signed off. A partner signs a period off; Mendiola warns about anything still open and never signs for you.

Available

Closing review

Closing

Mendiola reads the period's books, computes every statement line against the comparative and raises a query, with its figures, for anything it cannot explain.

Available

Automated close

Closing

On a schedule you set, Mendiola runs the close checks for each month, proposes bank matches and drafts accruals. A person approves each proposal before anything reaches Juan.

Early access

Period lock

Closing

After sign-off, an admin locks the books in Juan through the month end, one button and one date, with every account read back to prove it held.

Early access

Firm agents

Agents

Ask about a client's books in plain words. Agents read and draft; a change in Juan waits for your click on a confirmation, and nothing is ever sent on your behalf.

Available

Firm brain

Firm

Your firm's own procedures as skills, and every supplier your firm has seen across its companies, kept inside the firm.

Available

Activity log

Firm

Every change names who made it: a person, or Mendiola on a person's behalf. The log is append-only.

Available

BIR invoice vouching

Compliance

Each supplier invoice is checked against the BIR's invoicing rules before it reaches Juan, so a missing TIN or VAT statement is caught while it can still be fixed.

Available

Summaries of purchases and sales

Documents

A client's spreadsheet becomes bills and invoices in Juan: suppliers found by TIN, withholding set by the sheet's own ATC, and anything unclear held for a person.

Available

POS sales reports

Documents

A month of point-of-sale reports checked and released to Juan as one sales period, by a person, from its own page.

Available

Tax filings

Compliance

Every return each company owes, filed or not, paid or not, with a copy of each filing document Juan holds.

Available

EWT exposure

Compliance

What expanded withholding a company should have withheld and remitted, priced at the rates and penalties in the law, from its books in Juan.

Available

Audit risk

Compliance

A screen of each company against the BIR's audit selection criteria in RMO 22-2026. A screen, not a finding.

Available

Audit readiness and case clock

Compliance

What the BIR can match between a company's books and its filed returns, and, once a letter arrives, every deadline the law sets, from the dates a person confirms.

Early access

Questions Philippine firms ask us

Kept the way Mendiola keeps a reviewer's queries: each one raised, answered, and signed. Open any of them.

RefQueryStatus
Q-01Do my clients' books have to move to Jaz?Answered

Yes. Mendiola works on one ledger, Jaz, sold as Juan in the Philippines. Companies already there can start at once; the rest move first. We'll say plainly what that takes for your firm in the walkthrough.

Answered by the Mendiola team
Q-02Does an AI model change my clients' books?Answered

No. Models read documents and draft words. Code computes every figure you review. A change reaches the ledger only when a person approves it, and sending is off for each company until an admin turns it on.

Answered by the Mendiola team
Q-03What happens when Mendiola is wrong?Answered

Every proposal shows its reason, so a reviewer can see why before approving. A rejected proposal sends nothing. Sign-off stays a person's, and every change names who made it in an append-only activity log.

Answered by the Mendiola team
Q-04Will you sell to my clients?Answered

No. Our only customers are accounting firms. Mendiola never sells to a firm's clients, and your clients' data never feeds DoubleRule's own sales.

Answered by the Mendiola team
Q-05Can every member of my staff see every company?Answered

No. Members work on the companies they are assigned to. A company marked private is seen only by the person who created it; another admin gets the same answer as a stranger.

Answered by the Mendiola team
Q-06Where is our data kept?Answered

Mendiola's database and web application run in Singapore, and background jobs in the United States. Jaz keeps every organization's books in Singapore, US companies included. The security page maps every service.

Answered by the Mendiola team
Q-07Does Mendiola file our clients' BIR returns?Answered

No. It tracks every return each company owes, filed or not and paid or not, and keeps a copy of each filing document Juan holds. Filing stays with your firm.

Answered by the Mendiola team
Q-08What does it cost?Answered

Per organization, per month: US$40 for a firm in the United States, PHP 2,000 for a firm in the Philippines, with every module for your country. A subsidiary of one of your clients is free in any month it has fewer than 200 transactions; with 200 or more, it costs the same as any organization. Alpha firms pay nothing until launch. See the pricing page to work out your month.

Answered by the Mendiola team

See your own close in Mendiola.

We'll walk through a month for one of your companies, with the people who built it and use it every day.

Next: your name, your firm's size and three times that suit you. Or read about security first.
Prepared
Mendiola
Reviewed
Your reviewer
Signed off
Your partner