https://bir-online-tools.com/blog/categories/dat-files/Recent content in Dat-Files on BIR Online ToolsHugoenBIR Online ToolsFri, 24 Jul 2026 00:00:00 +0000https://bir-online-tools.com/blog/posts/bir-dat-file-naming-convention-folder-structure/Fri, 24 Jul 2026 00:00:00 +0000https://bir-online-tools.com/blog/posts/bir-dat-file-naming-convention-folder-structure/The file name and email subject line conventions documented for RELIEF SLSP, SAWT, and alphalist DAT filings, how TIN and branch code should be formatted, and the naming mistakes practitioners report causing eSubmission rejections or delays.https://bir-online-tools.com/blog/posts/correct-resubmit-dat-file-after-esubmission/Thu, 23 Jul 2026 00:00:00 +0000https://bir-online-tools.com/blog/posts/correct-resubmit-dat-file-after-esubmission/The difference between a pre-submission validation error and an error discovered after the BIR has already acknowledged a DAT file, how a corrected file is resubmitted through the same <a href="mailto:esubmission@bir.gov.ph">esubmission@bir.gov.ph</a> channel, why RMC No. 15-2025&rsquo;s version update is a real example of a mandatory resubmission, and how this connects to amending the return the DAT file supports.https://bir-online-tools.com/blog/posts/common-qap-dat-file-errors/Thu, 16 Jul 2026 00:00:00 +0000https://bir-online-tools.com/blog/posts/common-qap-dat-file-errors/Why a Quarterly Alphalist of Payees DAT fails the BIR Validation Module — TIN format, ATC mismatches, name issues, remittance mismatches, and wrong period — plus a worked example fixing an invalid TIN row.https://bir-online-tools.com/blog/posts/common-sawt-dat-file-errors/Thu, 16 Jul 2026 00:00:00 +0000https://bir-online-tools.com/blog/posts/common-sawt-dat-file-errors/The SAWT DAT errors that surface before a CWT credit sticks: TIN and format failures in the Alphalist Validation Module, rows that don&rsquo;t match BIR Form 2307 certificates, ATC and period mistakes, and how Section 250 / RMO No. 7-2015 exposure fits information-return failures.https://bir-online-tools.com/blog/posts/what-is-a-bir-dat-file/Thu, 16 Jul 2026 00:00:00 +0000https://bir-online-tools.com/blog/posts/what-is-a-bir-dat-file/What a BIR DAT file is, which returns use it, why a plain Excel workbook is rejected, and how the Alphalist Data Entry and Validation Module enforces a zero-error file before eSubmission.https://bir-online-tools.com/blog/posts/what-is-qap/Thu, 16 Jul 2026 00:00:00 +0000https://bir-online-tools.com/blog/posts/what-is-qap/What QAP is, how it differs from SAWT and from the annual BIR Form 1604-E alphalist, when it is due, and a worked example with three fictional Q2 payees.https://bir-online-tools.com/blog/posts/what-is-relief-slsp/Thu, 16 Jul 2026 00:00:00 +0000https://bir-online-tools.com/blog/posts/what-is-relief-slsp/What RELIEF SLSP is, how the Summary List of Sales differs from the Summary List of Purchases, who must file, how the DAT attaches to BIR Form 2550Q, and a worked sales example with concrete VAT amounts.https://bir-online-tools.com/blog/posts/what-is-sawt/Thu, 16 Jul 2026 00:00:00 +0000https://bir-online-tools.com/blog/posts/what-is-sawt/What SAWT is, why the payee (not the withholding agent) files it, when RR No. 2-2006 makes it mandatory, how the DAT format works, and a worked example matching BIR Form 2307 certificates to SAWT rows.https://bir-online-tools.com/blog/posts/relief-slsp-common-upload-errors/Tue, 14 Jul 2026 00:00:00 +0000https://bir-online-tools.com/blog/posts/relief-slsp-common-upload-errors/Why a RELIEF Summary List of Sales and Purchases file fails validation before it ever reaches the BIR — VAT arithmetic mismatches, inconsistent rates or periods, invalid TINs, and how consolidating counterparty rows avoids duplicate-entry problems.https://bir-online-tools.com/blog/posts/excel-to-bir-dat-file-alphalist/Tue, 14 Jul 2026 00:00:00 +0000https://bir-online-tools.com/blog/posts/excel-to-bir-dat-file-alphalist/How to structure an Excel file for the 1604-C Alphalist of Employees and the 1604-E Alphalist of Payees (Schedule 3/4), and convert each into a BIR-compliant DAT file using a BIR Excel Uploader.https://bir-online-tools.com/blog/posts/qap-vs-sawt-comparison/Tue, 14 Jul 2026 00:00:00 +0000https://bir-online-tools.com/blog/posts/qap-vs-sawt-comparison/How QAP (filed by the withholding agent with Form 1601-EQ/1601-FQ) and SAWT (filed by the payee with their income tax or VAT return) report the same transaction from opposite sides, with a worked example and a side-by-side comparison table.https://bir-online-tools.com/blog/posts/sawt-filing-deadlines/Tue, 14 Jul 2026 00:00:00 +0000https://bir-online-tools.com/blog/posts/sawt-filing-deadlines/Why SAWT doesn&rsquo;t have a standalone due date, the exact 2026 calendar dates for 1701Q, 1702Q, 1701, 1702, 2550Q, and 2551Q, and a worked example of a corporation attaching SAWT to its 1702Q filing.