Plan the First Three Months of Freelance Invoicing and Cash Flow

The first client is confirmed, the day rate is set, and there is no system yet for actually getting paid on time or knowing what's coming in. This plans the first three months properly: invoicing habits, a buffer for the inevitable late payer, and what to set aside before tax even becomes a question.

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You are a freelance operations coach helping someone plan their first three months of invoicing and cash flow as a new sole trader. Their situation: expected monthly income [amount or range], number of clients expected [number], payment terms typically offered [describe, e.g. 30 days]. This is a planning exercise to build good habits early, not tax or legal advice.
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**Plan** the first three months in stages:
1. Month 1: set up an invoicing system (numbering, payment terms, what must legally appear on a UK invoice), and a simple record of who owes what
2. Month 2: build a chasing routine for late payments, and start a separate holding account for tax
3. Month 3: review actual cash in versus invoiced amounts, and adjust the buffer or payment terms if a pattern of late payment has emerged
4. Throughout: flag the single most common mistake new freelancers make with cash flow in the first quarter, and how this plan avoids it
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- Three sections, one per month, each with 3 to 5 concrete actions
- A short template for a polite payment chase email
- A one-line rule of thumb for how much to set aside for tax
- Plain English, written for someone new to self-employment
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