Casual Loading Rate Calculator: What Casual Loading Actually Costs You as a Tradie

By Jared Woodbine, Managing Director — Alltech Coatings | Updated March 2026

If you’re running a trade business in Australia, you’ve probably had this conversation a dozen times: “Should I put them on casual or full-time?” Maybe you’ve been on the other side of it too — trying to figure out whether that casual rate you’re getting as a subby is actually better than going permanent.

Here’s the thing most tradies get wrong: they look at the hourly rate and think that’s the whole picture. It’s not. Casual loading changes everything — and if you don’t understand how it works, you’re either overpaying your crew or short-changing yourself.

What Is Casual Loading and How Does It Work?

Casual loading is the extra percentage added to a casual employee’s base hourly rate to compensate for the entitlements they miss out on — things like annual leave, sick leave, and public holidays. Under most modern awards in Australia, that loading sits at 25%.

So if a full-time sparky earns $40/hour, a casual doing the same job should be getting $50/hour. Sounds like casuals are winning, right? Not so fast.

That extra 25% is meant to cover:

• Annual leave — 4 weeks paid (roughly 7.7% of base pay)
• Personal/sick leave — 10 days paid (roughly 3.8%)
• Public holidays — typically 8 days (roughly 3.1%)
• Redundancy/notice — variable, but real money when it kicks in

Add those up and you’re looking at about 15-17% in entitlements. The remaining 8-10% is the “true premium” for being casual — no guaranteed hours, no job security. When you run the numbers through a casual loading rate calculator, the gap between casual and permanent is often much smaller than people think.

How to Calculate Casual Loading: The Real Maths

Let’s break this down with actual numbers a tradie can use.

Scenario: You’re a chippie earning $45/hour as a permanent full-timer.

Your total package value (what your employer actually pays):

• Base rate: $45/hour
• Super (11.5% in 2026): $5.18/hour
• Annual leave (7.7%): $3.47/hour
• Sick leave (3.8%): $1.71/hour
• Public holidays (3.1%): $1.40/hour
• True cost to employer: ~$56.76/hour

Now the casual equivalent:

• Base rate + 25% loading: $56.25/hour
• Super (11.5%): $6.47/hour
• True cost to employer: ~$62.72/hour

The casual costs about 10.5% more per hour worked — but they come with zero leave liability and you can flex hours up and down. For project-based trade work, that flexibility is worth serious money.

Want to see exactly how your numbers stack up? Run them through the Boss Tradie Subby to Salary Calculator — it handles all the award rates, super, and loading automatically.

Casual vs Full-Time: Which Is Actually Better for Your Trade Business?

This is where most “casual loading calculators” online fall short. They give you the number but not the context. Here’s what actually matters when you’re deciding how to structure your crew:

Go casual when:

• Work is project-based or seasonal (landscapers, concreters, painters — you know the drill)
• You need to scale up fast for a big job without long-term commitments
• You’re testing someone out before offering permanent
• Cash flow is unpredictable and you can’t guarantee 38 hours every week

Go permanent when:

• You’ve got consistent work 48+ weeks a year
• You want to retain good tradies (and they’re hard to find — we all know that)
• The total cost works out similar anyway once you factor in recruitment and training
• You’re building a team culture, not just filling spots

The smart move? Model both scenarios with real numbers before committing. The Advanced Tradie Calculator lets you compare full-time vs casual vs subcontractor side-by-side, including super, insurance, and tools of trade.

The Casual Loading Trap: What Most Tradies Miss

Here’s something I see constantly with trade businesses that rely heavily on casuals: they forget about the casual conversion rules.

Under the Fair Work Act, if a casual employee has been working regular, systematic hours for 12 months or more, they can request to convert to permanent. And from 2024, employers with 15+ employees have to proactively offer conversion.

What does that mean for your business? If you’ve had “casuals” working Monday to Friday, 7am to 3:30pm for the last year — they’re casual in name only. You’ve been paying the 25% loading AND you might now owe them permanent entitlements.

The fix is simple: if someone’s working regular hours long-term, do the maths and convert them. You’ll likely save money on the loading and avoid a compliance headache. Use a casual loading rate calculator to see exactly what you’d save by converting.

ABN Contractors vs Casual Employees: Don’t Get Them Confused

While we’re talking about loading rates, let’s clear up the biggest confusion in the trades: an ABN contractor is not the same as a casual employee.

A casual employee:

• Gets casual loading (25%)
• You pay their super
• You control how, when, and where they work
• They’re covered by your workers’ comp

An ABN subcontractor:

• Sets their own rate (no loading — it’s built into their price)
• Pays their own super
• Controls how they do the work
• Carries their own insurance

The ATO has been cracking down hard on “sham contracting” in the trades. If you’re telling someone with an ABN what hours to work, providing their tools, and they only work for you — the ATO will treat them as an employee regardless of what the contract says. The penalties are brutal: back-payment of super, leave entitlements, and fines up to $93,900 per contravention for companies.

Not sure where your subbies sit? The Subby to Salary Calculator can help you compare what a subby rate actually equates to as an employee salary — so you can make sure you’re structured right.

Quick Reference: 2026 Casual Loading Rates by Trade Award

Most tradies fall under the Building and Construction General On-site Award or the Manufacturing and Associated Industries Award. Here’s what casual loading looks like across common scenarios:

• Standard casual loading: 25% on top of base rate
• Saturday casual rates: 175% of base (first 2 hours), then 225%
• Sunday casual rates: 225% of base rate
• Public holiday casual rates: 275% of base rate

These rates can add up fast. A casual labourer on a Sunday public holiday is costing you nearly triple the base rate. That’s why smart trade business owners plan their crew mix carefully — and why running the numbers through a calculator before quoting jobs is non-negotiable.

Stop Guessing, Start Calculating

Whether you’re working out what to pay your next hire, figuring out if your casual rate is fair, or comparing subby vs salary for your own situation — the numbers matter more than gut feel.

Casual loading sounds simple at 25%, but once you layer in super, award rates, weekend penalties, and conversion obligations, it gets complicated fast. The tradies who get ahead are the ones who actually run the numbers instead of guessing.

Ready to see exactly where you stand? Jump into the Boss Tradie Subby to Salary Calculator and compare casual, permanent, and subcontractor rates side-by-side. Takes two minutes. Could save you thousands.