BOUTIQUE FINANCIAL CONSULTING
From startup chaos to scale-up clarity.
We partner with founders building the financial backbone their next stage demands.
12+
years advising founders
€40M+
in growth capital structured
2
offices · Haarlem & Amsterdam
THE PROBLEM
Most founders don't fail at growth. They fail at the structure underneath it.
Revenue scales. Reporting doesn't. Hiring accelerates. Cash visibility lags. By the time the gaps surface, they are expensive to close. We exist to close them earlier - with the discipline of a finance function and the speed a founder still needs.
Three principles. One purpose: making finance work for the business.
THE APPROACH
CLARITY
Turning financial data into insight everyone can act on.
- Management reporting
- FP&A
- Insight layer
CONTROL
Systems and workflows that free up time, not add complexity.
- ERP implementation
- Finance operations
- Workflow design
CONNECTION
Bridging finance with commercial teams, so growth is guided, not guessed.
- Strategic finance
- Board and investor narrative
- Commercial alignment
THE FIRM
Built on the discipline of institutional finance. Sized for the speed of a growing business.
At PHI Advisory, finance is meant to bring clarity, not confusion. We help growing companies build the financial foundations that create stability now and enable growth next - translating numbers into narratives that guide better decisions, stronger teams, and sustainable progress.
Founded by Peter Harpur - a finance leader with international experience across FMCG, trading, and technology - the firm partners with founders and management teams to professionalise finance operations, implement ERP and FP&A systems, and align business goals with financial reality.
Our work is partnership. We help businesses balance ambition with discipline, bring structure where there is chaos, and create momentum where things feel stuck.
The result: finance that supports rather than slows. Businesses that know where they stand, where they're going, and why.
Principal
Peter Harpur
"Translating numbers into narratives."
CLIENT VOICES
Voices from the work.
Within our first quarter, we had board-grade reporting we'd been promising investors for two years.
Anna Mertens
CEO, Placeholder Co.
PHI mapped the real flow of cash through the business. Within six weeks our monthly close went from three weeks to four days.
Tomas Vink
COO, Placeholder Co.
Most consultants leave when the spreadsheet is built. PHI stayed in the operating model.
Sara de Bruin
Founder, Placeholder Co.
COMMON QUESTIONS
Common questions before we talk.
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Most engagements start with a 30-minute conversation to understand where the business is and where it's going. From there, we propose a defined scope of work - often beginning with a diagnostic of your current finance function before any longer-term partnership is agreed.
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Our work suits founder-led companies between roughly €1M and €30M in revenue, typically post-seed through Series B. The common pattern: revenue is scaling faster than the finance function supporting it.
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No. We sit at a different layer - strategic finance, planning, and operations - and work alongside your existing accounting and bookkeeping providers. In some engagements we also help structure or upgrade those arrangements as part of the broader operating model.
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A first conversation is exploratory. We want to understand your business, the questions on your mind, and what "good" looks like for you. There is no obligation and no sales sequence - just an honest assessment of whether we are the right fit.
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Both. Most engagements run remotely with periodic on-site time in Haarlem, Amsterdam, or at the client's office. For implementation-heavy work - ERP rollouts, FP&A buildouts - on-site presence at key milestones is common.
Let's talk about your next stage.
A 30-minute conversation, no obligation. We'll listen first, then tell you honestly whether we're the right fit.
- Direct response within 1 business day
- No sales sequence, no auto-emails
- Confidential by default