WHAT MAY IT COST?

Target Costing

A target is set from the price the market will pay, long before anyone knows what the design will cost. PLP decomposes it down the costing structure, measures the gap against the live estimate, and carries the measures that close it from idea to realized.

What is this allowed to cost, and how far off are we today?

Cost engineering owns the number; programme management owns the consequence. The target is agreed once and rarely moves. The estimate moves every month — the design changes, suppliers requote, volumes firm up — so the question at every gate is the distance between them.

Cost engineering or product management owns the answer. The request usually arrives from sales, with a customer waiting on the other end of it — but the number is engineering's to give.

Three challenges

The comparison is already out of date

The estimate in the review deck was true at the last structure revision, and the structure has moved three times since. The gap on the slide closed in March.

The measures live somewhere else

The actions meant to close the gap sit in a different file from the numbers they change, so nobody can say which ideas became commitments and which commitments became savings.

A target only at the top

One number for the whole product cannot be given to anyone. Without a target per assembly, every conversation about the gap is a conversation about somebody else's part of it.

How it works

Break the target down the structure

Price less required margin gives what the product may cost. PLP pushes that allowance down the costing structure so every assembly, component and process step carries a target of its own — the level at which it can be owned.

Measure the gap against the live estimate

The estimate is the costed structure, not a figure retyped from it. The gap is calculated at every level and moves on its own when the structure or the costs move, so a design change that adds cost is visible the day it lands.

The estimate is the costed structure, not a figure retyped from it. The gap is calculated at every level and moves on its own when the structure or the costs move, so a design change that adds cost is visible the day it lands.

Carry the measures to realized

Each measure is recorded against the part of the structure it acts on, with an owner, a value and a date, and moves through idea, committed and realized. Target achievement counts the realized ones only.

Each measure is recorded against the part of the structure it acts on, with an owner, a value and a date, and moves through idea, committed and realized. Target achievement counts the realized ones only.

One assembly, four gates,
a gap that does not close by itself.

A structure with no cost, costed in one pass.

A target line is drawn and the estimate sits well above it. Over four gates the estimate steps down as measures land, and once it steps the wrong way when a design change adds cost. At the last gate the remaining distance is still visible, and so is what is still open against it.

A target per level
Not one number at the root
The gap moves itself
When the structure moves, so does the distance
Realized, not planned
Target achievement counts only what has landed

Programmes do not improve monotonically. An asset that shows only progress is showing something else.

  • Push a target from the root down to the level where it can be owned.

  • The distance between target and estimate, per node, not only per product.

  • The gap recalculates when the structure or the costs change.

  • Owner, value and date, carried from idea through committed to realized.

  • What has actually been closed, counted from realized measures only.

  • What the target and the gap were at every previous gate, version against version.

What it needs

The shared line, plus: a target cost, or the market price and required margin to derive one from, and the gates the programme is run against.

What is target costing?

Target costing is setting the cost a product is allowed to reach — from the price the market will pay, less the margin the business needs — and then managing the distance between that number and what the design currently costs, until the product reaches it or a decision is taken that it will not.

How is target costing different from early costing?

Early costing produces a number: what a product will cost, built up from its costing structure. Target costing sets a different number from the outside in, and runs a process around the difference for the length of a development programme. The estimate target costing tracks is the one early costing produces.

Does PLP set the target for us?

No. A target comes from a price the market will pay and a margin the business decides it needs, and both of those are judgements. PLP takes the number, breaks it down the costing structure, keeps the gap current and holds the history.

What happens to the gap when the bill of materials changes?

It moves. Both the target and the estimate are held against the costing structure rather than stored as figures, so a structure change is visible as a step in the gap instead of quietly making last month's comparison wrong. Previous versions are kept.

Can measures be tracked with owners and due dates?

Yes. A measure is recorded against the part of the structure it acts on, with an owner, a value and a date, and moves through idea, committed and realized. Target achievement counts only the realized ones.

We run target costing in a spreadsheet. What changes?

Where the numbers come from. The target, the estimate, the gap and the measures sit on the live costing structure, so the comparison is current without anyone rebuilding it before a gate. Exports stay available; most teams keep a spreadsheet for the conversation around the numbers.

What is target costing?

Target costing is setting the cost a product is allowed to reach — from the price the market will pay, less the margin the business needs — and then managing the distance between that number and what the design currently costs, until the product reaches it or a decision is taken that it will not.

How is target costing different from early costing?

Early costing produces a number: what a product will cost, built up from its costing structure. Target costing sets a different number from the outside in, and runs a process around the difference for the length of a development programme. The estimate target costing tracks is the one early costing produces.

Does PLP set the target for us?

No. A target comes from a price the market will pay and a margin the business decides it needs, and both of those are judgements. PLP takes the number, breaks it down the costing structure, keeps the gap current and holds the history.

What happens to the gap when the bill of materials changes?

It moves. Both the target and the estimate are held against the costing structure rather than stored as figures, so a structure change is visible as a step in the gap instead of quietly making last month's comparison wrong. Previous versions are kept.

Can measures be tracked with owners and due dates?

Yes. A measure is recorded against the part of the structure it acts on, with an owner, a value and a date, and moves through idea, committed and realized. Target achievement counts only the realized ones.

We run target costing in a spreadsheet. What changes?

Where the numbers come from. The target, the estimate, the gap and the measures sit on the live costing structure, so the comparison is current without anyone rebuilding it before a gate. Exports stay available; most teams keep a spreadsheet for the conversation around the numbers.

Langer Anger 7-9, 69115 Heidelberg, Germany

© 2026 Vianta GmbH

Langer Anger 7-9, 69115 Heidelberg, Germany

© 2026 Vianta GmbH

Langer Anger 7-9, 69115 Heidelberg, Germany

© 2026 Vianta GmbH