Malaysia's e-Faktur system (MyInvois) rejects roughly 1 in 5 invoices from standard invoicing platforms. We took 150 real invoices submitted over three months and tested them live against LHDN's validation engine using FreshBooks, Xero, and Wave. The results are not close. Why this test matters MyInvois is not optional. Since January 2023, all invoices over RM5,000 must be reported via e-Faktur within 48 hours of issue. From January 2025, the threshold drops to RM100. Silent failures happen—an invoice passes your platform's checks but fails LHDN's live validation, and you don't find out until audit season. We focused on the three platforms most common in Southeast Asia SMBs because they're the ones you're likely to migrate from or choose between. Each has a reputation for tax compliance, but reputation and actual LHDN pass rates diverge sharply. Test methodology Over 12 weeks, we processed genuine invoices from a mix of service (B2B), product (B2C), and hybrid businesses. Invoices ranged from RM150 to RM45,000. We captured: Pass rate: Invoice accepted by LHDN on first submission. Failure reason: Rejected field (tax code, amount rounding, business ID format, date parsing). Silent failures: Invoice marked as sent in the platform's log, but LHDN rejects it—user has no alert. Workaround cost: Manual steps required before resubmission. We did not test desktop-only exports; all tests used cloud APIs or platform-native MyInvois integrations. Pass rates: Xero leads, Wave surprises, FreshBooks lags Platform Invoices tested First-pass rate After one fix Xero 50 92% 98% Wave 50 78% 88% FreshBooks 50 74% 84% Xero's 92% first-pass rate is the industry standard. Almost every failure (4 invoices) was recoverable—a tax code typo or a date format the system accepted but LHDN flagged. After one fix cycle, 49 of 50 passed. Wave's gap is meaningful but not catastrophic. The 78% rate hides a pattern: Wave fails on invoices with line-item tax amounts that don't round cleanly. If your total is RM1,000 with 6% SST, Wave calculates RM60 SST correctly, but LHDN's parser sometimes disagrees on the rounding method for compound totals (subtotal + tax + discount combinations). Six of Wave's 11 failures were this type. FreshBooks' 74% rate reflects a broader issue: its MyInvois integration does not validate tax codes in real time. You can save an invoice with an invalid code (e.g., a typo in a 6-character LHDN tax classification), and it exports without warning. We found 8 of 13 failures were invalid tax codes that FreshBooks never flagged. Key finding: Wave and FreshBooks fail silently. The invoice appears sent; the user assumes it's validated. Xero logs rejections more visibly, so users catch them faster. Silent failures: Why audit trails matter A silent failure is when your invoicing platform logs "sent to MyInvois" but LHDN rejects it in the background. You don't find out until the audit or when a customer says they didn't receive it. FreshBooks: 5 of 13 failures were silent. The platform never told us the invoice failed; we only discovered it by checking LHDN's status page directly. If your team doesn't audit MyInvois manually every week, these slip through. Wave: 3 of 11 failures were silent. Wave improved slightly here in recent updates, but it still doesn't pull live rejection reasons back into the invoice view. Xero: 0 of 4 failures were silent. Xero displays LHDN's rejection reason in the invoice status pane. You see it immediately and can click through to the error. If you're on Orin's invoicing module , rejections sync live to your invoice status, and the audit trail logs the exact LHDN response code. You can't miss a failure. Common failure modes: Tax codes, rounding, format The 26 failures across all platforms fell into four repeatable categories: Tax code mismatch (11 failures, 42%) LHDN's tax codes are strict. FreshBooks offers a dropdown, but it's not always accurate. Wave and Xero allow free text, which tempts typos. Examples: User enters "SR0000001" (standard-rated service, LHDN code format) but the system expects "SR000001" (one fewer zero). Exemption codes are platform-specific. Xero maps them correctly; FreshBooks sometimes offers old codes that LHDN rejected in Q2 2024. Zero-rated services require a specific code. If you leave it blank or use the default "standard rate", LHDN bounces it as non-compliant. Fix: Download LHDN's official tax code list and paste it into your system's settings. Test a sample invoice before bulk upload. Xero's native list is 95% accurate; FreshBooks' is outdated as of our test date (September 2024). Amount rounding and compound totals (7 failures, 27%) This is Wave's weak point. When you have a subtotal, discount, and tax, the order of operations matters: Subtotal RM100 → 10% discount = RM90 → 6% SST = RM95.40. Correct. Subtotal RM100 → 6% SST = RM106 → 10% discount = RM95.40. Also correct, but LHDN's parser may reject if the JSON fields are in a different order. Wave exported the discoun