FP&A Consulting for Venture-Backed Startups

FP&A consulting is the outside-in delivery of financial planning, forecasting, budgeting, and variance analysis for companies that don't have (or don't yet need) a full in-house FP&A team. A consultant builds the financial model, stands up the board reporting rhythm, ships the first variance pack, and trains your operators to run it. For venture-backed startups, it's usually project-based — 6 to 12 weeks scoped around a board meeting, raise, or plan cycle.

An FP&A consultant builds or rebuilds your financial model, stands up a 13-week cash forecast, designs the actuals-vs-plan variance pack, wires a KPI dashboard, and drafts your board reporting package. The goal isn't permanent dependency — it's to deliver a working rhythm in 6 to 12 weeks and train your finance lead to run it after we leave.

Project-based FP&A is scoped delivery: you need a model built, a board pack prepped, or a 13-week cash forecast stood up, in 6 to 12 weeks. A fractional CFO is ongoing strategic advisory — board seat, investor conversations, capital strategy, team leadership, for 6 to 12 months. Most of our clients start with a project; some graduate to fractional CFO as they scale. If you're unsure, start on a scoping call — we'll tell you which fits.

The typical trigger is a board meeting, a fundraise, or a plan cycle that exposes how ad-hoc the current process is. If your model hasn't been updated since the last raise, your head of finance is covering AP instead of planning, or your KPIs differ across the board deck and the investor update — it's time. Most of our engagements kick off 4–12 weeks before a board meeting or raise.

Financial modeling services ship the artifact — a defensible Excel model you hand to investors or use to plan. FP&A consulting ships the function — model plus the ongoing discipline around it (monthly variance, quarterly board pack, rolling forecast, KPI tracking). A model without an FP&A rhythm gets stale in 90 days. An FP&A rhythm without a solid model produces confident wrong answers. We do both.

Our FP&A engagements are included in Waveup's monthly retainer model — $5k or $10k tiers depending on scope and seniority. A focused Model Build runs smaller than a full FP&A Sprint, which runs smaller than an Ongoing FP&A engagement. Every scope is written up in a proposal after a free 30-minute discovery call. See our pricing page for retainer details.

A board pack contains: pre-read memo (2–3 pages, distributed 72 hours ahead), KPI deck pulled from your dashboard, strategic narrative on the quarter, specific board asks and decisions needed, P&L and cash-flow highlights, and an ops/hiring update. The goal: directors arrive prepared so the meeting itself is for strategic discussion, not number recitation.

Variance analysis compares actuals to plan, line by line — revenue, gross margin, opex categories, headcount — and attaches narrative commentary explaining each drift. It's the discipline that turns a budget from a static document into a steering tool. Without it, you're flying blind three months after the plan lands. We author the first variance pack with you, then hand back a template your team runs every month.

Yes — our FP&A Sprint is scoped for exactly that. Week 1 is audit and scoping; weeks 2–3 are model build; weeks 3–4 are the variance pack and KPI dashboard; weeks 5–6 are board pack template and handover. Tighter timelines are possible for focused Model Build engagements (4 weeks). Every scope starts on a 30-minute discovery call.

Both. Pre-revenue startups need bottom-up unit economics and scenario planning for the raise; post-Series A operators need variance discipline and board-pack rhythm. The deliverables differ, but the engagement structure is the same — 6 to 12 weeks, scoped around a specific trigger. We've run FP&A for founders raising their first $1M pre-seed and for Series D operators managing $50M+ ARR.

We're tool-agnostic. Most engagements run in Excel or Google Sheets because that's still the lingua franca of venture-backed finance. For companies already on Cube, Pigment, or Jirav we'll work in-platform. We don't sell EPM system rollouts, so there's no vendor bias — we pick the tool that fits your team's maintenance reality after handover.

Yes — knowledge transfer is scoped into every engagement. The first variance pack, first board pack, and first quarterly plan cycle are authored alongside your finance lead so the rhythm is modeled, not dropped. Every engagement ends with a documented playbook and a one-hour handover session. We don't build dependencies; we build functions.

Yes — it's one of our most common engagements. We'll rebuild the model for investor scrutiny, stand up the data room financials, draft the board updates your existing investors need during the raise, and hand your team a post-close variance rhythm. Of the $630M raised by our clients in 2025, most shipped with a Waveup-built model behind the pitch. See fundraising support for the full raise workflow.

SaaS, fintech, AI, marketplace, D2C, real estate, consumer, healthtech, and regulated verticals (med-device, climate, defense-adjacent) — across 64 countries served from our London HQ. Our unit-economics frameworks adapt to each industry — SaaS metrics for software, GMV and take rate for marketplaces, contribution margin for D2C, CAC and LTV for AI-powered products.