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Day 3 of 20 · AI for Finance

Your First AI Financial Analysis

Today you stop reading about AI and start using it. You're going to take a profit and loss statement, paste it into ChatGPT, and extract meaningful insights — variance commentary, trend analysis, and actionable recommendations — in minutes instead of hours.

This is the skill you'll use more than any other. Whether you're a bookkeeper preparing month-end reports, an analyst building board packs, or a CFO reviewing divisional performance, the ability to turn raw financial data into professional commentary at speed is transformative.

Workflow showing a P&L statement being pasted into AI and producing variance commentary, insights, and recommendations
The core AI finance workflow — paste data in, get professional analysis out, then apply your judgement.

The anatomy of a good finance prompt

AI is only as good as what you ask it. A vague prompt gives you a vague answer. A structured prompt gives you board-ready output.

Here's the framework for finance prompts — the CRAF method:

Context — Tell the AI who you are and what the data represents. "I'm a management accountant reviewing Q3 results for a mid-size retail company."

Role — Tell the AI what role to play. "Act as a senior financial analyst writing commentary for the board."

Ask — Be specific about what you want. "Write variance commentary for each line item where the variance exceeds 5%."

Format — Specify the output format. "Use bullet points with the variance percentage and a one-sentence explanation for each."

A prompt using all four elements will consistently outperform a prompt that just says "analyse this data."

Your first analysis — step by step

Here's a sample P&L you can paste into ChatGPT right now. In practice, you'd use your own anonymised data.

Sample Q3 P&L — Retail Division

| Line Item | Actual | Budget | Variance |

|-----------|--------|--------|----------|

| Revenue | £2,450,000 | £2,600,000 | (£150,000) |

| Cost of Goods Sold | £1,470,000 | £1,430,000 | (£40,000) |

| Gross Profit | £980,000 | £1,170,000 | (£190,000) |

| Staff Costs | £320,000 | £340,000 | £20,000 |

| Marketing | £85,000 | £110,000 | £25,000 |

| Rent & Utilities | £95,000 | £92,000 | (£3,000) |

| Operating Profit | £480,000 | £628,000 | (£148,000) |

Now try this prompt: "I'm a management accountant at a mid-size retail company. Here are our Q3 actuals vs budget. Act as a senior financial analyst and write variance commentary for the board pack. For each line item, state the variance in pounds and percentage, explain the likely cause, and flag any items that need management attention. Use a professional but accessible tone."

Knowledge Check
What does the "R" in the CRAF prompt framework stand for?
A
Range — defining the date range for analysis
B
Results — specifying the expected numerical outputs
C
Review — asking the AI to check its own work
D
Role — telling the AI what professional role to adopt
The R in CRAF stands for Role. By telling AI to act as a "senior financial analyst" or "tax advisor," you shape the tone, depth, and terminology of the response. A prompt with a defined role consistently produces more professional and relevant output.
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ChatGPT
online
I'm a management accountant at a mid-size retail company. Here are our Q3 actuals vs budget: Revenue: Actual £2,450K vs Budget £2,600K COGS: Actual £1,470K vs Budget £1,430K Gross Profit: Actual £980K vs Budget £1,170K Staff Costs: Actual £320K vs Budget £340K Marketing: Actual £85K vs Budget £110K Act as a senior financial analyst. Write variance commentary for each line for the board pack. Include variance %, likely cause, and flag items needing attention.
**Q3 Variance Commentary — Retail Division** **Revenue: £150K adverse (5.8%)** ⚠️ *Requires attention* Revenue fell short of budget by £150K, driven by weaker footfall in September. Like-for-like sales were down 4.2%, suggesting a market-wide softening rather than a company-specific issue. Recommend reviewing Q4 promotional calendar to recover lost ground. **Cost of Goods Sold: £40K adverse (2.8%)** COGS increased against budget due to a combination of higher freight costs and unfavourable product mix. Margin erosion of 0.8pp (GP margin 40.0% vs budgeted 45.0%) warrants a review of supplier terms and pricing strategy. **Gross Profit: £190K adverse (16.2%)** ⚠️ *Requires attention* The combined effect of lower revenue and higher COGS compressed gross profit significantly. This is the key line item for management focus — the margin decline is structural, not just volume-driven. **Staff Costs: £20K favourable (5.9%)** Headcount ran below budget following a delayed hire in the operations team. The role is now expected to be filled in Q4. No ongoing saving anticipated. **Marketing: £25K favourable (22.7%)** Marketing underspend reflects a deliberate decision to pause the autumn campaign pending the brand refresh. This is timing-related; the spend is expected to shift into Q4. Shall I draft an executive summary paragraph for the CFO, or create a RAG-rated dashboard view?
↻ Replay conversation

Refining your output — the iteration loop

Your first AI output is a draft, not a final product. The real skill is in the iteration:

Round 1: Generate — Paste data and prompt. Get the initial analysis.

Round 2: Refine — Ask follow-up questions. "The revenue shortfall was actually due to a delayed product launch, not footfall. Can you update the commentary?" AI will adjust instantly.

Round 3: Extend — Ask for more. "Now add a forward-looking section with three recommendations for Q4." The AI builds on the context already established.

Round 4: Format — Ask for the output in your preferred format. "Reformat this as a table with columns for Line Item, Variance, RAG Status, and Commentary."

This loop — generate, refine, extend, format — is the workflow you'll use daily. Each round takes seconds, and the output gets sharper every time.

Knowledge Check
Why should you correct AI-generated variance commentary when you know the real cause of a variance?
A
Because auditors require that all variance commentary be written entirely by humans
B
Because AI can only infer likely causes from the data — your business knowledge provides the actual explanation
C
Because AI outputs are always wrong about the causes of financial variances
D
Because correcting the AI helps train the model to be more accurate in future
AI infers probable causes based on patterns, but it doesn't know your business. When you know the real reason — a delayed product launch, a one-off contract, a staff restructure — correcting the AI gives you accurate, contextual commentary that reflects what actually happened.

Common mistakes to avoid

Mistake 1: Pasting raw data without context. Don't just paste numbers. Tell the AI what industry, what time period, what level of detail you need. Context transforms the output.

Mistake 2: Accepting the first output. The first draft is rarely perfect. Iterate. Correct. Refine. That's where the value is.

Mistake 3: Including confidential details. Remember yesterday's rules — anonymise client names, remove account numbers, use aggregated data where possible.

Mistake 4: Skipping verification. AI can invent plausible-sounding explanations. If it says "the variance is due to seasonal trends," verify that's actually true for your business. Your job is to validate, not to transcribe.

Knowledge Check
What is the recommended workflow when using AI for financial analysis?
A
Generate, refine with corrections, extend with follow-ups, and format for your audience
B
Generate the output once and submit it directly to save maximum time
C
Generate the output, have a colleague review it, then submit
D
Generate multiple separate outputs and pick the best one
The generate-refine-extend-format loop is the most effective workflow. Each iteration takes seconds and produces sharper, more accurate output. The key is treating AI as a drafting partner that you guide with your professional knowledge, not a finished-product machine.
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Day 3 Complete
"You've run your first AI financial analysis. The CRAF method — Context, Role, Ask, Format — turns vague prompts into board-ready output. Remember: generate, refine, extend, format. Tomorrow you'll apply this to full financial statement analysis."
Tomorrow — Day 4
Reading Financial Statements with AI
Tomorrow you'll learn how to feed balance sheets and income statements into AI to extract key ratios, trends, and red flags in seconds.
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1 day streak!