Backward vs Forward Scheduling And How Choosing the Right Model Will Get You 98% Reliability

Walter Scremin CEO at Ontime

11 hours ago

Professional logistics strategy meeting (2)

A dynamic delivery scene showing multiple trucks and vans moving along organised routes.

Forward scheduling plans your deliveries from a start date. Backward scheduling plans them back from a deadline. It sounds simple, but choosing the wrong one for your business can cause chaos.

If you’re constantly dealing with an 8 AM panic and watching profits get eaten by overtime and fuel costs, your scheduling system is likely the problem. The good news is that this isn’t just the cost of doing business but a problem you can fix with the right plan.

Key Takeaways On Your Four-Week Blueprint to 98% On-Time In-Full Performance

Understand the Two Methods: Forward scheduling plans from a start date to move high volumes, while backward scheduling works back from a deadline to ensure deliveries are perfectly on time.
Week 1: Audit Your On-Time In-Full Score: You need to track every shipment to get a real reliability score. This number is your starting point for measuring any improvement.
Week 2: Find Your Top 20% of Clients: Use the 80/20 rule to identify your most important clients who need perfect, on-time deliveries.
Week 3: Test a Hybrid Scheduling Model: Try using a “Forward” approach for your regular clients and a “Backward” approach for your critical clients.
Week 4: Check Your New Cost to Serve: After one week, look at your costs again. You should see a clear impact on fuel use, overtime hours, and overall efficiency.

Follow This Four-Week Blueprint to Hit 98% On-Time In-Full Performance

You can bring order to your operations without needing to rebuild your entire business. Just follow this simple four-week plan to get your delivery process right.

Week 1: Audit the On-Time In-Full score

Get a simple spreadsheet. For every delivery you make, ask two questions: Was it on time? And was it in full, with the correct goods and no damage? Calculate the percentage of perfect deliveries. This number is your real reliability score, and it’s the only way to know if your changes are working.

Week 2: Segment the top 20% of clients

Look at your sales report and find the 20% of clients that bring in 80% of your profit. These are your most important customers. The goal here is simple: you need to know exactly whose orders must never be late or incorrect.

Week 3: Run a hybrid scheduling pilot

For one full week, ask your team to use two different planning methods.

For your bulk and more flexible clients: Use a standard scheduled route. This is your “Forward” approach.
For your critical clients: Plan their deliveries backward from their strict arrival time. This is your “Backward” approach.

Week 4: Analyse the new cost to serve

At the end of the week, check your reports for fuel costs, driver overtime, and the number of successful deliveries. Compare these new numbers to the ones from Week 1. This will show you the real financial impact of your new, smarter scheduling system.

Track the Only Metric That Truly Matters

The best delivery operations measure their success with one number: the On-Time In-Full (OTIF) score. Many businesses only track if a delivery was “on time,” but this doesn’t tell the whole story. The OTIF score measures the percentage of deliveries that arrive with the right items, in the right amount, at the right time.

Why This Matters

A delivery that arrives on time but has damaged boxes still costs you money. It means a second trip, a frustrated customer, and more headaches for your team. A low OTIF score is a sign that your planning system is broken.

A delivery driver standing at the back of an open delivery truck, discovering damaged boxes among neatly stacked parcels.

From my experience, I see many Australian businesses running at 75-80% reliability, thinking the daily stress is normal. It isn’t. High-performing companies run at 98% or higher.

The Financial Impact

If you deliver to a major distribution centre like Coles or Woolworths, a reliability score below 95% can lead to large financial penalties. These fines come directly out of your profit. Once you start tracking your OTIF score, you can make a smart choice about which scheduling method is right for you.

Choose Your Forward or Backward Logistics Planning Method

You don’t have to pick just one method. For most businesses, a mix of both forward and backward scheduling works best. Here is a simple breakdown of how they work in the real world.

A clean split-screen comparison of two logistics scheduling models — left side shows forward scheduling with multiple trucks arriving at a warehouse at the same time causing congestion and queues; right side shows backward scheduling with evenly spaced arrivals.

Scheduling Style	The Goal	The Reality
Forward Scheduling (As Soon As Possible)	“Move it fast.”	This helps you get a lot of deliveries done. But it can cause all your trucks to arrive at once, creating traffic jams at the warehouse. It works best for clients who have flexible receiving times.
Backward Scheduling (Just In Time)	“Arrive exactly on time.”	This takes a bit more planning. But it’s absolutely necessary for your most important orders with strict deadlines, like those for construction sites or major retail stores.

The Solution: Use a Hybrid Model

In my experience, the final and most expensive part of the delivery journey is the “last mile” that can make up a huge chunk of your total shipping costs. This is why getting it right is so important for protecting your profit. I often advise a simple 80/20 split:

80% of deliveries use the Forward method for standard, flexible clients.
20% of deliveries use the Backward method for your high-value, time-sensitive clients.

Many businesses use route optimisation software to help manage this, which saves a lot of money on fuel and makes the whole process easier.

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Avoid This Critical Mistake with Your Finances

There is a financial trap that many business owners fall into called Cross-Collateralisation. It’s important to understand what this is so you can avoid it.

What It Is

In simple terms, this is when a bank links your family home to your business loan as security.

Why This Is Dangerous

If your business has trouble paying back its loan, the bank can use the value of your home to cover the debt. This could even force you to sell your home. It legally ties your personal life to your business finances.

A Safer Approach

My advice is to always keep your finances separate. Try to use different banks for different loans. If your business runs into trouble, the problem stays with the business and doesn’t put your family home at risk. This simple separation gives you a vital layer of protection.

From Firefighting to Strategic Growth

“I’ve spent three decades helping businesses make these exact changes. You can keep putting out daily fires and accept it as normal, or you can use a professional system to prevent the fires from starting in the first place. The choice is yours.”

—Walter Scremin, CEO of Ontime Delivery Solutions

FAQ: Production and Scheduling Approach

Here are simple answers to common questions about logistics planning.

What’s the Difference Between Forward and Backward Scheduling?

The biggest difference is their starting point.

Forward scheduling starts planning from today and asks, “What is the earliest this can get there?” It’s focused on getting things out the door fast.
Backward scheduling starts from the deadline and asks, “What is the latest we can start to get this there on time?” It’s focused on being precise.

Which scheduling method is better for my business?

Neither is better all the time; it depends on your customers.

Use Forward Scheduling if you deliver large amounts of goods to clients with flexible delivery times. It’s great for moving volume but can be less precise.
Use Backward Scheduling if you deliver to important clients with very strict deadlines, like big retail stores or construction sites. It’s less efficient for pure volume but protects your reputation and helps you avoid penalties.

For most businesses, a hybrid approach that uses both methods works best.

How will route optimisation software improve supply chain efficiency?

This software helps by planning the best routes for your drivers automatically. Instead of someone doing it by hand, the software uses real-time information to make smart choices.

It reduces fuel costs by finding shorter routes.
It helps drivers do more deliveries in the same amount of time.
It improves reliability by considering traffic, delivery windows, and what the vehicle can carry.

What is the bullwhip effect in logistics?

The bullwhip effect is a term for how small changes in customer orders can create bigger and bigger problems further up the supply chain. For example, a small increase in orders might cause you to panic, leading to unnecessary overtime and expensive shipping choices. A stable, hybrid scheduling model helps absorb these shocks so they don’t hurt your business.