Validate Your Business Idea
Tests whether people will pay for what you offer, defines the value proposition, and checks the employment contract.
See it in Grace’s examplePrompts for Life · Pack 12 · 10 prompt templates
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The Side Business & Freelancing pack: 10 AI prompt templates for ChatGPT, Claude and Gemini
Price, win and run your side business properly. Tell the freelance prompts what you offer and who you sell to, and get a price based on your real hourly rate, a break-even model, client outreach, a proposal and statement of work, contract terms that protect you, an invoicing routine and a tax set-aside plan.
Free guide: How to price freelance work
Real examplePricing model · Prompt 04
“Last year: $18,450 for 410 billed hours. I didn’t count the revisions.”
Pricing model — June 2026 to May 2027
Benefits of the freelance prompts
Four things the freelance prompts do, from the first offer to the quarterly review.
Every hour is counted, billed or not. Your effective hourly rate is revenue divided by all hours, and every price is tested against it.
No work starts without a statement of work that fixes the deliverables, revisions, timeline and price. Anything extra is quoted first, as a change order.
Deposits and payment terms are set before the work starts, and every unpaid invoice is tracked until it is paid.
Tax is set aside from every payment, and your employment contract is checked first for outside-work, IP and non-compete clauses.
What is in the pack
Each freelance prompt works on its own. The prompt asks for what is needed and, in Claude, returns a finished Excel or Word file. Run the one you need, or run all ten in order.
Tests whether people will pay for what you offer, defines the value proposition, and checks the employment contract.
See it in Grace’s exampleSizes the market for your offer and defines the one type of client to pursue first.
See it in Grace’s exampleSets the price from three angles - your costs, the market, and the value to the client - and packages the offer.
See it in Grace’s exampleModels revenue, costs and every hour worked, finds the break-even point, and builds the pricing model spreadsheet.
See it in Grace’s exampleBuilds the list of prospects, writes the outreach, and tracks each prospect through the stages of the sales pipeline.
See it in Grace’s exampleWrites the proposal and the statement of work that fixes deliverables, revisions, timeline and price, as a Word document.
See it in Grace’s exampleSets the contract terms that protect you, and handles requests outside the agreed scope with change orders.
See it in Grace’s exampleSets the invoicing routine, payment terms and reminders, and tracks unpaid invoices until they are paid.
See it in Grace’s exampleSeparates the business finances, sets the tax set-aside rate, and plans the estimated tax payments.
See it in Grace’s exampleReviews the quarter’s revenue, profit, hours and pipeline against the plan, and decides prices and priorities for the next quarter.
See it in Grace’s exampleWorked example
Grace Lin is a 36-year-old marketing manager in Chicago who writes website copy for small businesses in the evenings and at weekends. In 2025 she quoted $45 an hour and billed 410 hours across nine clients: $18,450. She also worked 200 hours of revisions she never billed, one client paid a $3,600 invoice 94 days late, and in April 2026 she owed $6,134 of tax with nothing set aside. Here is how the ten prompts took her from $30 an hour to $87, one step at a time.*
Prompt 01 · Define
What Grace brought · her 2025 client list
“I’ll write copy for anyone who asks. Last year I had nine clients.”
What the prompt returned
Three of the nine were independent physical therapy and chiropractic clinics: 54% of her revenue and the fewest revisions. Her contract allows outside work that she discloses, outside her employer’s industry.
Takeaway: choose the client type your record shows pays best, and check the employment contract before the first client.
A value proposition is the specific result a client pays for, and the reason to buy it from you rather than someone else. Customer discovery, Steve Blank’s method, tests an idea with real buyers before building it: only payments and commitments count as evidence.
Prompt 02 · Define
What Grace brought · clinic directories
“Chicago has a lot of clinics. I just don’t know how many.”
What the prompt returned
TAM: about 2,400 independent clinics in Illinois. SAM: 1,140 in the Chicago area. SOM: 12 clients a year, which is what her hours can serve.
Takeaway: size the market in clients you can actually reach, and set the target from your available hours.
TAM is all potential revenue for the offer; SAM is the part you can reach and serve; SOM is the share you can realistically win in a year. An ideal client profile describes the client who gains most and is easiest to win.
Prompt 03 · Price
What Grace brought · competitors’ prices
“I charged $45 an hour. Other writers seem to charge anything from $60 to $120.”
What the prompt returned
Floor $1,800. Market $1,500 to $3,000. One new patient is worth about $1,500 to a clinic. Price: $2,400 for five pages and two revision rounds.
Takeaway: price between the cost floor and the value to the client, and sell a defined package rather than hours.
Cost-plus pricing starts from hours and costs plus a margin, and sets the floor. Market-rate pricing reads what comparable providers charge. Value-based pricing starts from what the result is worth to the client.
Prompt 04 · Price
What Grace brought · her 2025 figures
“Last year: $18,450 for 410 billed hours. I didn’t count the revisions.”
What the prompt returned
2025: $18,450 over 610 hours, $30 an hour. Plan: 12 packages, $28,800, 348 hours, $83 an hour. Built in Claude as a working Excel model.
Takeaway: count every hour, and test each price against the effective hourly rate it produces.
The contribution margin is the price minus the costs that vary with each sale. The break-even point is the number of sales at which contribution covers fixed costs. The effective hourly rate is revenue divided by every hour worked, billed or not.
Prompt 05 · Win
What Grace brought · the clinic list
“My clients have all found me by word of mouth. I’ve never sold anything.”
What the prompt returned
60 clinics contacted over eight weeks: 14 replies, 8 calls, 5 proposals, 3 signed.
Takeaway: track every prospect through each stage, so you can see where sales are lost.
A sales pipeline is the set of prospects at each stage of buying: contacted, replied, call held, proposal sent, won or lost. The conversion rate is the share that moves from one stage to the next, and shows where sales are lost.
Prompt 06 · Win
What Grace brought · her discovery call notes
“Lakeview Physical Therapy wants its site rewritten before its second location opens in September.”
What the prompt returned
Five pages, two revision rounds, four weeks, $2,400: 50% deposit, balance due 14 days after delivery. Built in Claude as a three-page Word proposal.
Takeaway: put deliverables, revisions, exclusions and payment terms in writing before any work starts.
A statement of work (SOW) fixes the scope: deliverables, number of revision rounds, timeline, what the client provides, price and payment terms. Scope that is not written down becomes unpaid work.
Prompt 07 · Deliver
What Grace brought · Lakeview’s request
“Lakeview approved the pages, then asked for three more.”
What the prompt returned
A change order for three extra pages at $400 each, $1,200, with the new delivery date. Approved by email before the work started.
Takeaway: quote every out-of-scope request as a change order, and wait for written approval before doing it.
Scope creep is work added after the price was agreed. A change order is a written amendment that adds the work and its price before it is done.
Prompt 08 · Deliver
What Grace brought · a year of invoices
“One client paid $3,600 ninety-four days late. I didn’t want to nag.”
What the prompt returned
A 50% deposit before work, the balance due 14 days after delivery, a late fee stated in the SOW, and four reminders set up in advance.
Takeaway: set the deposit, terms and reminders before the work starts, not after the invoice is late.
Accounts receivable is money invoiced but not yet paid. Days sales outstanding (DSO) is the average number of days it takes to be paid. Payment terms such as net 14 set the due date.
Prompt 09 · Run
What Grace brought · her tax bill
“I owed $6,134 in April and had nothing put aside.”
What the prompt returned
2025 tax: self-employment tax $2,446, federal income tax $2,831, Illinois $857: 35% of profit. Plan: set aside 35% of every payment; $2,357 a quarter.
Takeaway: set aside tax from every payment as it arrives, at a rate calculated from your own figures.
In the US, side-business profit carries self-employment tax (Social Security and Medicare) as well as income tax. It is usually paid during the year through quarterly estimated payments, or by raising withholding at the day job.
Prompt 10 · Run
What Grace brought · her third quarter
“First full quarter on the new system. Is it working?”
What the prompt returned
July to September 2026: $10,800 revenue, 124 hours, $87 an hour, 9.5 hours a week. $3,596 set aside for tax.
Takeaway: review a few numbers every quarter, and raise the price when you win most proposals.
A quarterly business review compares results with the plan using a few key performance indicators (KPIs). For a side business, it also checks the hours against the day job.
Three documents from Grace’s ten prompts: the pricing model from prompt 04, the Lakeview proposal from prompt 06, and the third-quarter review from prompt 10.
Pricing model — June 2026 to May 2027
Summary sheet and the monthly model

Pricing model — June 2026 to May 2027
Summary sheet and the monthly model

Website Copy Proposal — Lakeview Physical Therapy
Proposal and statement of work, two pages

Quarterly business review — July to September 2026
KPIs against the plan in the pricing model
| KPI | Plan | Actual | Cause |
|---|---|---|---|
| Revenue | $9,600 | $10,800 | +$1,200: the Lakeview change order |
| Profit before tax | $9,075 | $10,275 | Includes the change order |
| Hours | 111 | 124 | +13: change order and extra outreach |
| Effective hourly rate | $86 | $87 | On plan |
| Proposals won | — | 3 of 5 (60%) | High: price below what clients will pay |
| Days to payment | 14 | 9 | Deposits and reminders |
| Tax set aside | $3,176 | $3,596 | 35% of profit |
Client review. All four clinics are repeat prospects for new locations. No client to drop.
Hours check. 9.5 hours a week against a plan of 8, with no overlap with the day job. The extra hours were paid by the change order.
Next quarter. Raise the package to $2,800 from January 2027; hold four packages a quarter; cut outreach time with a second referral request.
Decision. Hold the volume and raise the price. A 60% win rate shows clients would pay more.
Prompt output, formatted for this page. In Claude each prompt returns it as a finished Excel or Word file; in other AI tools the prompts return the same content as tables and text; the figures come from whatever you paste in. Grace Lin and her clients are fictional, so every number here is ours to show you.
Yes. The pricing prompt sets your price from three angles, your costs, the market rate and the value to the client, and tests it against your effective hourly rate.
Yes. The proposal prompt writes the proposal and a statement of work that fixes deliverables, revisions, timeline and price. In Claude, the proposal comes back as a Word document.
The tax prompt separates your business finances, sets a set-aside rate from your own figures and plans the estimated tax payments. This is general information, not tax advice; rules differ by country and state.
ChatGPT, Claude and Gemini. The pack works best in Claude, where the pricing model is built in Excel and the proposal in Word.
Pack 12 · Side Business & Freelancing
* Grace Lin, Lakeview Physical Therapy, the people named and all figures on this page are fictional and used for illustration only. Output depends on the information you supply and the AI tool you use. Contract and tax outputs are general information, not legal or tax advice; tax, contract and employment rules differ by country and state.
Nine packs for everyday life, from career and money to travel and health, each written to the same standard with its own worked example.