What This Guide Is and Is Not
Most "how to start a consulting business" content is written by people who sell courses about starting a consulting business rather than people who have built one. This guide is the operating plan I would hand to a friend leaving a Big Four partnership or a corporate strategy team to go independent — what to do in months one to twelve, in roughly the order to do it, and the metrics that tell you whether you are actually progressing.
It assumes you can already do the work. The bottleneck for almost every new independent consultant is not capability; it is the commercial muscles that a salaried role never required you to develop.
Month 1: Pick a Niche You Can Defend
The single most expensive mistake new consultants make is being a generalist. A generalist consultant is competing with the entire global market on the basis of vague competence. A specialist consultant is competing with a small number of named alternatives on the basis of demonstrable expertise.
A defensible niche has three properties:
1. It is small enough to be the obvious choice. "Strategy consultant for European fintech compliance teams under 50 people" is a niche. "Strategy consultant" is not.
2. It is large enough to sustain a practice. A niche of 80 potential buyers is fine; a niche of 8 is a hobby.
3. The buyer can name the problem. If the prospect cannot articulate the problem in a sentence, you are selling vitamins instead of painkillers and the deal cycle will be brutal.
The mechanical exercise: write down the three most recent engagements you delivered that you genuinely enjoyed and that the client paid premium fees for. The intersection of "enjoyed" and "premium fees" is your niche signal. Define it in one sentence — what problem, for what kind of organisation, in what geography.
Month 2: Legal, Tax, and Banking
The unsexy infrastructure phase. Most of it is one-off work that you do once and never think about again.
- Entity. UK: limited company by default; LLP if partnering. US: LLC by default; S-corp election once revenue stabilises. EU: depends on jurisdiction; consult a local accountant.
- Bank account. Separate from personal. Mandatory; not optional.
- Accountant. Find one who works with other consultants in your jurisdiction. The wrong accountant will cost you 5× their fee in missed deductions and bad structure.
- Insurance. Professional indemnity (£1–2M cover for most independents), public liability, cyber if you handle client data. Most clients will request a certificate.
- Contract templates. NDA, MSA, SoW, engagement letter. Generic templates are dangerous; have a lawyer adapt yours for the niche.
- Bookkeeping. Cloud bookkeeping (Xero, QuickBooks, FreeAgent) from day one. Receipts photographed and tagged weekly, not quarterly.
Budget two weeks of part-time effort and £3,000–6,000 in one-off costs. It is the cheapest two weeks you will ever spend.
Month 3: Build the Buying Surface
The buying surface is everything a prospect sees in the first thirty seconds of looking you up. It does not sell anything by itself; its job is to remove every reason to disqualify you in the first thirty seconds.
- A single landing page. Not a multi-page site. One page with: who you serve, what you do, three named engagements you can describe (anonymised if needed), one paragraph of credibility, a way to book a 25-minute call.
- LinkedIn profile rewritten. Headline names the niche; about section is written for the buyer, not the recruiter; featured section shows two or three artefacts of your work.
- A short case study. One page per engagement: the problem, the approach, the outcome. Three case studies is enough; ten is procrastination.
- An email signature. Title, niche, one-line credibility, calendar booking link.
Do not build content marketing, podcasts, courses, or lead magnets in month three. They are downstream of having paying clients, not upstream.
Months 3–6: The First Three Clients
The first three clients are the hardest and the most important. They define the case studies, the reference calls, the pricing baseline, and the operational shape of the practice for the next two years. Get them well and the next ten are easy.
The pipeline for the first three clients is almost always warm. Cold outreach works eventually, but the conversion cycle is too long to fund the first quarter. The realistic sources, in order of likely yield:
1. Previous employers as clients. Many former employers will hire their former employees as consultants if approached professionally. The reference is built-in; the legal terms are often pre-existing.
2. Former colleagues who now work elsewhere. Pick the ten most useful, send each a personalised note saying you are independent and naming a specific way you could help them.
3. Warm referrals from your network. Be explicit about who is a good fit. "I'm looking to help two more fintech compliance teams this quarter" is actionable; "I'm available" is not.
4. Targeted outbound. A list of 50 named accounts in the niche, one personalised email per week, follow-ups at days 4 and 11.
The structural advice that matters more than tactics: price the first three engagements at a sensible rate, not a discounted rate. Discounted first clients become permanent discounted clients, and the case studies they produce attract more discount-hunters. Charge what the work is worth; if a prospect cannot afford it, find one who can.
Months 6–9: Build the Delivery System
Once paying engagements are running, the bottleneck shifts from sales to delivery quality and capacity. The discipline is to systemise the work so that the third engagement of a given type takes 60% of the time of the first.
- Templates. Every recurring document type — proposal, inception report, mid-term review, final deliverable — has a template with the structural sections pre-written and the firm voice baked in.
- Frameworks. Every recurring analysis — SWOT, PESTLE, stakeholder, value-chain — has a framework template with prompts and worked examples.
- Brand kit. Logo, colours, signature, footer, fonts. Every client-facing document looks like it came from your firm, not from Microsoft.
- Cadence rituals. Weekly internal review, monthly client check-ins, fortnightly steering committees. Cadence is what stops engagements drifting.
The objective is to remove every avoidable decision from the delivery workflow. Decisions are expensive; templates are cheap.
Months 9–12: Stabilise Cash Flow and Plan for Year Two
Cash flow is the leading cause of new-practice failure. Profitable practices die because the cash arrives 90 days after the work was done and the consultant runs out of runway in week eleven.
The discipline:
- Stage payments. Every engagement above £15,000 has milestone-based invoicing, not "invoice on completion." Common structure: 25% on signature, 25% at inception sign-off, 25% at mid-term, 25% on final delivery.
- 30-day terms, chased on day 31. Stop apologising for chasing. Late payment is a commercial issue, not a relationship issue.
- Three months of operating cash. As soon as cash flow allows, build a reserve equal to three months of personal and business costs. It changes the price you are willing to walk away from.
- A retainer or two. A single £4,000 monthly retainer is worth more in cash stability than three one-off engagements of similar total value.
At month twelve, run a year-in-review against the four metrics that actually matter:
1. Revenue. Total billed, total collected, total in the pipeline with a probability weighting.
2. Effective hourly rate. Total billed ÷ total hours worked (including the unbilled ones). This is the truth about your pricing.
3. Utilisation. Billable hours ÷ total available hours. Aiming for 50–60% in year one is realistic; 70%+ is unsustainable solo.
4. Pipeline coverage. Pipeline value ÷ next-quarter revenue target. Healthy is 3×.
The Honest Year-One Trajectory
The realistic shape of a year-one solo practice, based on the consultants I have coached through the transition:
- Q1. £0–£15,000 of revenue. Spent largely on infrastructure and first conversations.
- Q2. £20,000–£60,000. First two or three engagements deliver and reference.
- Q3. £40,000–£90,000. Pipeline builds off case studies and referrals.
- Q4. £60,000–£120,000. The compounding starts.
Six figures in year one is achievable. It is not automatic. The consultants who hit it almost always had warm pipeline at the start; the consultants who started entirely cold typically hit it in year two.
What to Resist
The seductive distractions that quietly delay six figures by another six months:
- Building a course before having ten clients
- Hiring before having more demand than you can serve solo
- Saying yes to engagements outside the niche because the cash is real
- Networking events that fill the calendar but do not move the pipeline
- Aesthetic over-investment in the website before the first client
Where to Take This Next
- For the pricing piece, see consulting pricing models explained.
- For the contracting piece, see contract clauses you should never sign blind.
- For the pipeline piece, see 9 cold email templates that get replies.