Exógena 2026 · Book with a deposit
Your companies' 2026 exógena, done and reconciled before DIAN cross-checks it
You hand over the files you already have, from any accounting system, and get for each company the 2026 tax-year formats reconciled against forms 350, 300 and the draft 110, with the reconciliation explained and ready for your accountant to upload and sign.
Forty companies in three cohorts: deliveries by 26 February, 24 March and 16 April 2027.
50 % when you sign the proposal in your portal, 50 % on delivery. Minimum ten companies per firm. No DIAN credentials.
Who it is for
For whoever files the información exógena for ten or more Colombian companies and today gets it out in May, in long nights or with a seasonal assistant, and reconciles it afterwards, once DIAN has already written. It works with companies on Siigo, World Office, Helisa, ContaPyme, Alegra or any other system: I work from what each one exports.
To see first how the 2025 exógena you already filed reconciles, the free checker does it on your computer, sending nothing.
What you get for each company
The 2026 tax-year formats
One XML per applicable format, in its current version, validated against DIAN's technical annexes and validation software, split and encoded as the portal requires.
The reconciliation workbook
One sheet per check: the exógena figure, the declared figure, the difference, the explanation and the status. Every value in the XML traces back to its source rows.
Third parties cleaned up
Each correction with its before, after and reason, and the list of third parties your firm must confirm before uploading.
The account map
How each account maps to a format and a concept, with the reason. It is reused the following year.
The reconciliation note
Two or three pages: what was cross-checked, which differences remain and why, and what the firm decides: correct a 350, ask a supplier to fix its report, or leave it explained.
Prepared answers
The differences DIAN could ask about in September, each with its explanation and support, so a persuasive letter is answered without starting over.
It does not include filing or signing: your firm does that with each company's signing instrument, which is why I neither ask for nor use DIAN credentials. Nor correcting the returns, preparing the income tax return, or large taxpayers.
The three options
Option 1 · Reconciled
Everything above, for each company. For the firm that says: «I have nobody to do it in April».
Option 2 · Reconciled and defended
Option 1, plus portal rejections fixed until it uploads, a drafted reply to any DIAN letter or requirement about that exógena until 31 December 2027, and the reconciliation folder to defend it. For the firm that says: «I fear DIAN's letter afterwards».
Option 3 · Season closed
Option 2, plus each company's 2026 municipal exógena and the set-up for the 2027 season. For the firm that says: «I do not want to start from scratch again».
The price is per company and goes in the proposal, with a minimum of ten companies per firm. The first two firms to book pay half the list price; the third and fourth, 75 %. From 1 February 2027 the list price rises by 20 % for new firms.
How it works, and when
1. Booking
Fill in the form below, read the proposal in your portal, sign it and pay the 50 % deposit by card or bank transfer. Your place in the cohort is held.
2. Diagnosis, in November and December
We run the checker on your companies' 2025 exógena and I review a sample of what each system exports, so that in February the files work the first time.
3. February and March 2027
With the 350 and 300 returns filed and the books closed: third parties cleaned up, account map, preliminary formats and the VAT and withholding checks.
4. April 2027
With the draft 110: the income tax checks and the final formats, at least ten business days before each company's deadline. You pay the balance on receiving the last company of your cohort.
The guarantee
If the exógena I deliver does not reconcile with the 350, 300 and draft 110 your firm gave me, or DIAN's portal rejects it, I keep working on it at no cost until it reconciles and uploads. In options 2 and 3, if before 31 December 2027 one of those companies receives a DIAN letter or requirement over a difference I should have caught, I prepare the reply and the correction at no cost.
What the guarantee does not do: it does not refund money, pay penalties or correct the company's books. Whatever fails to reconcile because of an error at source is reported and explained, and fixed in your firm's books. The accountant reviews, signs and answers DIAN; I deliver the work so they can do it with everything in view.
Your data and your clients' data
The files are processed in Quito, Ecuador, under my control, with encrypted backups; they are used for this work only, handed to nobody, and deleted ninety days after the last delivery, except the reconciliation folder you choose to keep. Before the first file we sign the data transmission agreement that Colombia's Law 1581 of 2012 requires. The rest is in the data processing policy.
Book
Tell me how many companies you handle and which option you want
On submit, the site builds your proposal and takes you to your portal to read it, sign it and pay the deposit. It also reaches your inbox. You commit to nothing until you sign.
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A question before booking?
Write to me and I answer myself. A twenty-minute video call is enough to look at your files and choose the option.
contacto@andresbrinez.com