Skills · 20 June 2026 · 2 min read

How to Build a Metric the Buyer Can Defend to Finance.

You have uncovered a real pain, but the number attached to it is vague, vendor-generated, or something the buyer would never repeat in a budget meeting.
Will Koning
Will Koning
Founder, meritt
meritt illustration: qualification methodology meddpicc

You have uncovered a real pain, but the number attached to it is vague, vendor-generated, or something the buyer would never repeat in a budget meeting.

A metric only does its job if the economic buyer can stand behind it. Generic ROI claims - 'improve productivity', 'reduce inefficiency' - get stripped out of business cases the moment finance asks a follow-up question. The metric needs to come from the buyer's own numbers, expressed in the terms their CFO or VP already uses. When it does, it becomes their argument, not yours.

Where it goes wrong

Deals stall or get discounted when the buyer cannot justify the spend internally. If the number you built cannot survive a five-minute finance review, it will not survive one. You end up back at square one, or the deal dies quietly.

What you'll be able to do

You can co-build a specific, buyer-owned number - dollars saved, revenue protected, hours recovered - that the buyer would repeat word for word in a budget conversation.

How to do it

Start with current-state cost

Start with current-state cost. Ask: 'What does this problem cost you today in time, labor, or lost revenue?' Then get the inputs: volume, frequency, unit cost. Do not estimate these yourself.

Use the formula

Use the formula: current-state cost = volume x frequency x unit cost. Solution value = current-state cost minus future-state cost. Then subtract total cost of ownership to get net value.

Ask which frame the buyer cares about most -

Ask which frame the buyer cares about most - hard savings, capacity creation, payback period, or revenue uplift - and express the metric in that frame, not yours.

Validate with a 'CFO test'

Validate with a 'CFO test': 'Would you be comfortable defending that number to finance?' If they hesitate, the number needs more grounding or a different frame.

Repeat the baseline back to them out loud

Repeat the baseline back to them out loud: 'So you have X volume, Y frequency, Z cost per event. If we reduce that by A%, the annualized value is roughly B. Does that match how your team would evaluate it?'

See the difference

Weak

Rep says: 'Our platform typically delivers 30% efficiency gains, so based on your team size that's around $200k in savings.' The buyer nods but never repeats the number to anyone.

Strong

Rep asks: 'How many invoices do you process per month, and roughly how long does each one take?' Buyer says 12,000 invoices, about six minutes each. Rep works it through with them: 'That's 1,200 hours a year. At your loaded cost of $40 an hour, that's $48,000 in labor capacity before we even get to error reduction. Is hard savings or capacity creation the frame your CFO would use?' Buyer says: 'Capacity - we can't get headcount approved.' Rep adjusts: 'So the story is 1.5 FTE equivalents freed up without a hire.' Buyer writes that down.

You can co-build a specific, buyer-owned number - dollars saved, revenue protected, hours recovered - that the buyer would repeat word for word in a budget conv

How you'll know it's working

You've got it when the buyer uses your metric in their own words to someone else - in an email, a follow-up call, or a meeting you are not in.

Questions people ask

How do you build a metric the buyer can defend to finance?

A metric only does its job if the economic buyer can stand behind it. Generic ROI claims - 'improve productivity', 'reduce inefficiency' - get stripped out of business cases the moment finance asks a follow-up question. You can co-build a specific, buyer-owned number - dollars saved, revenue protected, hours recovered - that the buyer would repeat word for word in a budget conversation.

What is the most common mistake to avoid?

Deals stall or get discounted when the buyer cannot justify the spend internally. If the number you built cannot survive a five-minute finance review, it will not survive one.

Ready to hire

Hire with Assessment.

£7-10k flat fee. The methodology, delivered.

See Hire with Assessment
More reading

The methodology.

Four behaviours, role skills. Published in full.

Read the methodology