Rate management in logistics planning and optimisation

In logistics, planning a route well is not only about reducing mileage.

It is also necessary to understand how much each alternative really costs.

One route may be short but expensive. Another may travel a few more miles but make better use of the fleet, avoid additional costs or fit the rates agreed with carriers more closely.

For this reason, rate management is an important part of logistics planning and optimisation.

Rate schedules define how transport costs are calculated according to criteria such as distance, weight, volume, zone, vehicle type, number of deliveries, time spent, customer, carrier or specific service conditions.

When these costs are integrated into planning, the system can make more realistic decisions focused on the economic outcome of the operation.

What is a logistics rate schedule?

A logistics rate schedule is a set of rules defining how the cost of a transport service is calculated.

It can be very simple or highly complex.

In some cases, cost is calculated per mile. In others, it is calculated by zone, weight band, pallet, shipment, delivery, hour, vehicle or a combination of several factors.

There may also be surcharges for fuel, tolls, waiting, urgent deliveries, returns, special handling, temperature-controlled transport, loading and unloading, failed deliveries or out-of-hours services.

The rate schedule converts the physical operation into an economic cost.

Therefore, to optimise a plan correctly, it is not enough to know which route is shortest. It is necessary to know which route is most profitable or least costly under the actual rates.

Why rate schedules make planning more complex

Rate management adds complexity because cost does not always increase linearly.

An additional delivery may add little cost if it fits into an existing route. But it may increase the cost sharply if it requires a change of zone, exceeds a rate band, needs a different vehicle type or creates a second route.

Similarly, two routes covering the same distance may have different costs if they fall within different rate zones or are carried out by different carriers.

It may also be the case that a plan which appears less efficient in mileage terms is more economical because of the structure of the rate schedule.

For this reason, optimisation based only on distance can lead to economically poor decisions.

Distance-based rates

One of the most common models is charging by distance.

In this case, cost depends on miles travelled or on the distance between origin and destination.

It may be applied as a cost per mile, by distance bands or through a minimum charge plus a variable cost.

This type of rate is easy to understand, but it does not always reflect the full reality.

A route covering few miles may involve considerable waiting time, access restrictions or additional costs. A longer route may be smoother and more efficient in time terms.

For this reason, distance-based rates are often combined with other concepts.

Rates by weight, volume or units

In many operations, cost depends on the quantity transported.

It may be calculated by kilograms, tonnes, cubic metres, pallets, packages, litres or any other logistics unit.

This model is common when the load has a direct impact on the cost of the service.

However, it can also create complex decisions.

A vehicle may have spare weight capacity but no spare volume. An order may move into a higher rate band because of a very small difference. Several small orders may be more efficient if they are grouped correctly.

Integrating these rules into planning makes it possible to calculate the real cost of each alternative more accurately.

Zone-based rates

Another common model is charging by zone.

In this case, cost depends on the geographical area of origin, destination or delivery.

For example, a company may have different rates for urban, provincial, regional, national or international distribution. It may also divide the territory by postcodes, provinces, commercial areas or logistics zones.

Zone-based rates can simplify management, but they also influence planning.

A route mixing zones may have a different cost from several separate routes. An order located close to the boundary between two zones may change the applicable rate. Grouping deliveries within the same zone may reduce costs.

Optimisation must therefore consider not only geographical position, but also the rate structure associated with that position.

Rates by vehicle or resource

Cost may also depend on the type of vehicle used.

Using a light van does not cost the same as using a rigid truck, tanker, refrigerated vehicle or vehicle with a tail lift.

Each resource may have fixed costs, mileage costs, hourly costs and specific conditions.

Furthermore, certain vehicles may be mandatory for particular orders because of capacity, access, temperature, compatibility or regulatory requirements.

Planning must decide not only which route to operate, but also which resource should operate it.

A poor vehicle assignment can increase cost even when the route itself is correct.

Fixed and variable costs

To analyse a rate schedule properly, it is useful to distinguish between fixed and variable costs.

Fixed costs arise from using a resource or contracting a service, even if the route is short.

Variable costs depend on the activity carried out: mileage, time, weight, deliveries, waiting or additional services.

This distinction is important in optimisation.

Sometimes it may be beneficial to group more deliveries into one route in order to spread the fixed cost more effectively. In other cases, splitting routes may be preferable if load, schedules or rate bands cause variable cost to rise too much.

The best decision depends on the balance between both types of cost.

Surcharges and additional costs

In transport, the final cost is not always explained by the base rate alone.

There may be surcharges for special conditions:

Fuel.
Tolls.
Waiting during loading or unloading.
Urgent delivery.
Delivery outside normal hours.
Additional handling.
Second delivery attempt.
Goods return.
Special vehicle.
Temperature-controlled transport.
Hard-to-access areas.

These surcharges can significantly change the real cost of an operation.

If planning does not consider them, it may choose apparently inexpensive routes that later generate substantial additional costs.

Internal rates and carrier rates

A company may work with the internal costs of its own fleet, agreed rates from external carriers or a combination of both.

For an own fleet, cost is generally calculated from vehicles, drivers, mileage, hours and the operating structure.

For subcontracted transport, cost depends on the rates negotiated with each provider.

This makes it possible to compare alternatives:

Operate a route with the company's own fleet.
Subcontract a shipment.
Consolidate orders before dispatch.
Separate deliveries by zone or carrier.
Use a different vehicle.

Rate management enables these decisions to be based on real cost rather than intuition alone.

Cost-oriented optimisation

When rate schedules are integrated into the system, optimisation can go beyond reducing mileage.

It can seek the plan with the lowest total cost.

This means that the optimisation engine can assess different options according to the company's actual economic rules.

For example, it may choose a slightly larger vehicle if this reduces the number of routes. It may avoid a combination of orders that moves into a more expensive rate band. It may assign a zone to a particular carrier if that carrier's rate is more competitive. Or it may propose a different route if this reduces waiting, surcharges or variable costs.

Cost-oriented optimisation helps connect logistics planning with the economic result.

Expected cost and actual cost

Good rate management also makes it possible to compare expected cost with actual cost.

Before the route is carried out, the system can estimate how much the plan should cost.

Afterwards, that estimate can be compared with the cost finally invoiced or recorded.

This comparison helps identify deviations:

Routes that cost more than expected.
Unexpected surcharges.
Errors in rate application.
Incidents that increased cost.
Carriers with frequent deviations.
Unprofitable zones or services.

These data make it possible to improve future plans and negotiate rates more effectively.

Rate schedules and cost per delivery

Rate schedules are closely related to the calculation of cost per delivery.

If the cost rules are known, the cost of a route can be allocated across its deliveries and the economic impact of orders, zones or customers can be analysed.

This helps answer important questions:

Which customers have the highest logistics cost.
Which zones are least efficient.
Which routes have the lowest profitability.
Which orders should be grouped more effectively.
Which special services are making the operation more expensive.

Planning stops focusing only on moving goods and begins to provide useful information for business management.

Why a spreadsheet is not enough

Many companies manage rate schedules in spreadsheets.

This can work when there are few cases, few carriers or simple rules. But as exceptions, bands, zones, surcharges and conditions increase, maintenance becomes difficult.

Errors are common: outdated rates, incorrectly applied conditions, omitted surcharges or calculations that do not reflect the real operation.

Furthermore, a spreadsheet can calculate costs, but it is unlikely to optimise thousands of route combinations while taking those costs into account.

Integrating rate schedules into the planning system makes it possible to automate calculations and make better decisions from the outset.

Benefits of integrating rate schedules into planning

Adding rate management to the optimisation process provides clear benefits:

Better estimation of transport cost.
Realistic comparison between alternatives.
Reduction of hidden costs.
Better selection of vehicles or carriers.
Control of cost per delivery.
Fewer errors in rate application.
Greater negotiating power with providers.
Profitability-oriented planning.

When costs are calculated correctly, the company can make more precise logistics decisions.

Conclusion

Rate management is an essential part of logistics planning and optimisation.

It is not enough to know which route is shortest or which vehicle is available. It is also necessary to know how much each alternative costs according to the actual rules of the operation.

Distance, weight, volume, zones, vehicles, carriers, surcharges and additional costs can completely change the best decision.

For this reason, advanced logistics planning should integrate rate schedules into the optimisation process.

LOGISPLAN makes it possible to orient planning towards the real cost of the operation, applying Evolution Algorithms' experience to combine routes, constraints and rate schedules in more efficient and profitable logistics decisions.