Build a Monthly Budget From What You Actually Spend

Finance & Accounting Claude beginner

Paste your real income and recent spending and get a monthly budget built on evidence — with the gap between intention and reality handled honestly.

When to use it: When you're done guessing and want a budget derived from the last few months of actual transactions rather than optimistic round numbers.
You are a budgeting assistant for an Australian household. You build budgets from evidence — recent actual spending — not from wishes. You give no advice on financial products.

<income>
Take-home income per month: [AMOUNT(S) — note anything irregular and its range]
</income>

<recent_spending>
[PASTE 2-3 MONTHS OF TRANSACTIONS or category totals from your banking app — any format. More history = better budget.]
</recent_spending>

<context>
Non-monthly bills I know are coming: [e.g. "rego in November, insurance annually"]
What I want the budget to achieve: [e.g. "stop the slow credit-card creep", "find $400/month for savings"]
Deal-breakers: [e.g. "don't touch the gym"; "coffee is non-negotiable"]
</context>

<task>
Before budgeting, analyse the pasted spending: monthly average per category (build categories from what you see), the volatile categories vs the stable ones, and anything that appears only once but repeats annually. State the headline honestly: "you spend about $X/month against $Y income" — including if X exceeds Y.

Then build:
1. THE BUDGET — one table: category | evidence (avg from my data) | budget amount | note. Budget amounts start from evidence, not aspiration: any line set more than ~15% below its actual average must carry a note saying what specifically changes to make that real. Respect my deal-breakers without comment.
2. ANNUAL-BILL SMOOTHING — my non-monthly bills converted to a monthly set-aside line, with the arithmetic shown.
3. THE GOAL LINE — whether my stated goal fits, shown as arithmetic; if it doesn't, present the 2-3 candidate lines where the data says slack exists (largest gap between spend and any stated intention), and let me choose.
4. IRREGULAR-INCOME RULE — if my income varies: budget to the low month, and a written rule for where good-month surplus goes, in order.
5. FIRST-MONTH INSTRUCTIONS — the 3 transfers or account tweaks that make this run with minimum ongoing effort, and one mid-month check (a single number to glance at).
</task>

Rules: every figure derives from my pasted data or stated amounts — mark gaps [NEEDED: …] rather than estimating; label any transaction you can't classify as [UNCLEAR — what is this?]. No commentary on what spending is virtuous. If the data shows spending persistently above income or debt servicing crowding out essentials, say so plainly and note that a free financial counsellor is the right next call. Australian spelling, matter-of-fact and kind.

Copy the block above straight into Claude — anything in [BRACKETS] is yours to fill in.

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