The Superannuation Guarantee Charge is one of the most expensive compliance mistakes an Australian employer can make — not because the penalty amounts are arbitrary, but because it simultaneously costs you more in super, removes your tax deduction, adds interest and creates an administration charge. Under Payday Super from 1 July 2026, the risk of triggering an SGC has increased significantly for any business without a reliable per-pay-cycle remittance process.
What Is the Superannuation Guarantee Charge?
The SGC is a tax imposed on employers who fail to pay the correct superannuation guarantee contributions by the required deadline. It replaces the missed SG obligation — meaning if you miss an SG payment, you still owe the super (now called the SGC shortfall), but you owe it to the ATO rather than directly to the employee's fund, and the total cost is significantly higher than the original obligation.
The SGC is governed by the Superannuation Guarantee (Administration) Act 1992 and the Superannuation Guarantee Charge Act 1992. It is assessed by the ATO through SGC statements, which employers must lodge to disclose shortfalls.
How the SGC Is Calculated
| SGC Component | How It Works | Tax Deductible? |
|---|---|---|
| Shortfall amount | The underpaid SG — but calculated on salary and wages (broader base than OTE), meaning the shortfall is often larger than the missed SG | No |
| Nominal interest | 10% per annum on the shortfall, calculated from 1 January or 1 July (start of the relevant quarter) | No |
| Administration charge | $20 per employee per quarter in which a shortfall occurred | No |
| Part 7 penalty | Up to 200% of the SGC amount for deliberate non-compliance, obstruction or failure to lodge an SGC statement | No |
The critical point: every component of the SGC is non-tax-deductible. Standard SG contributions are fully deductible. Missing an SG payment and incurring the SGC instead costs you the tax benefit on the entire amount — which adds approximately 25–30% to the after-tax cost of a shortfall for most businesses.
How Payday Super Changes the SGC from 1 July 2026
Before Payday Super, the SGC was assessed quarterly. If you paid SG late but before the quarterly lodgement date, you could sometimes remediate without triggering the full SGC. From 1 July 2026, each payday is its own SG obligation window — contributions must reach employee funds within seven business days of each payday, or the SGC applies to that specific payday.
This creates a compounding problem for businesses with frequent pay cycles. A weekly-paid business that misses three consecutive pay cycle remittances has three separate SGC liabilities, each accruing interest from a different start date, each carrying its own administration charge per employee. The quarterly assessment model is gone.
For the practical steps if you've already missed a Payday Super deadline, see our Payday Super missed deadline guide.
Worked Example: What the SGC Actually Costs
Scenario: 10 employees, fortnightly payroll, missed 3 pay cycles
Average fortnightly salary: $4,000 per employee
SG rate (2026–27): 12%
SG per pay cycle per employee: $480 (on OTE basis)
SGC shortfall base (salary and wages — broader): approx. $490 per employee per cycle
—
Shortfall amount (3 cycles × 10 employees × $490): $14,700
Nominal interest (10% p.a. on $14,700 for ~3 months): ~$368
Administration charge ($20 × 10 employees × 1 quarter): $200
Total SGC: ~$15,268
Tax deduction lost (vs standard SG at ~30% rate): ~$4,410
Effective after-tax cost of the SGC vs paying on time: ~$19,678 vs ~$10,290 — nearly double.
SGC vs Standard SG: Why the Cost Difference Matters
Paying SG on time is always cheaper than paying the SGC — even ignoring interest and the administration charge — because of the deductibility difference. At a 30% corporate tax rate, a $10,000 SG contribution costs the business $7,000 after tax. The same amount as an SGC shortfall costs $10,000 after tax (no deduction), plus interest and administration. The total after-tax cost of paying SG late is commonly 40–60% higher than paying it on time.
Voluntary Disclosure: Why It Matters
If you have a shortfall, lodge an SGC statement with the ATO before they contact you. Voluntary disclosure before an ATO audit typically results in:
- Reduced or waived Part 7 penalties — the ATO distinguishes between employers who disclose promptly and those discovered through audit
- Lower enforcement escalation risk under the ATO's Payday Super year-one risk-based approach
- A clear paper trail demonstrating good faith, which matters if the ATO later reviews the same period for other compliance issues
Voluntary disclosure does not eliminate the shortfall amount, interest or administration charge — it reduces the penalty loading on top of these.
Director Penalty Notices
For company employers, SGC liabilities can become personal liabilities for directors under the Director Penalty Notice regime. A DPN makes a company director personally liable for the company's unpaid SGC — an important risk for business owners who assume that a company structure provides protection from super non-compliance consequences. The DPN regime applies regardless of whether the director was involved in day-to-day payroll decisions.
How to Avoid SGC Liability
- Submit to your clearing house by day 2–3 of the seven-business-day window — not day 6. Clearing houses take 3–5 business days to process contributions to employee funds. Submitting late in the window leaves no margin for processing delays or fund rejections.
- Monitor clearing house confirmation after every pay run — "submitted" is not "confirmed received." Check the clearing house portal for fund-level confirmation, and act on any rejections immediately.
- Audit employee super fund details regularly — stale fund membership numbers are the most common cause of contribution rejections. Update records at least annually and when any employee changes funds.
- Account for public holidays — seven business days means business days, not calendar days. State-specific public holidays affect the deadline and most payroll software doesn't auto-adjust clearing house submission timing.
- Use a managed payroll service — managed payroll outsourcing for Sydney businesses and Melbourne businesses handles clearing house monitoring, rejection management and SGC response as part of the service — removing the operational burden entirely.
Payday Super Compliant Payroll. SGC Risk Eliminated.
OrtúsPro Global's managed payroll service monitors every clearing house remittance, manages fund rejections and ensures every SG contribution reaches employee funds within the seven-business-day window.
Frequently Asked Questions
What is the Superannuation Guarantee Charge?
The SGC is a penalty tax imposed on employers who fail to pay the correct superannuation guarantee contributions by the required deadline. Unlike standard SG, the SGC is calculated on a broader wages base, includes 10% per annum interest, carries a $20 administration charge per employee per quarter, and is entirely non-tax-deductible.
How does Payday Super change the SGC from 1 July 2026?
From 1 July 2026, Payday Super changes the SGC from a quarterly to a per-payday assessment. Any SG contribution that doesn't reach an employee's fund within seven business days of payday triggers an SGC liability for that specific payday. Businesses can accumulate multiple SGC liabilities within a single quarter if they miss multiple pay cycles.
Is the Superannuation Guarantee Charge tax deductible?
No. The SGC — including the shortfall amount, interest component and administration charge — is entirely non-tax-deductible. Standard SG contributions are tax-deductible. A $10,000 SGC liability costs significantly more than $10,000 in standard SG once the tax deductibility difference is factored in.
Does voluntary disclosure reduce SGC penalties?
Yes. Lodging an SGC statement voluntarily before the ATO contacts you typically results in reduced Part 7 penalties and lower enforcement risk. The SGC liability itself — shortfall, interest and administration charge — still applies, but voluntary disclosure reduces the penalty loading on top of these components.