Lighting the Way to AIExact recipes for real AI jobs

small business · ~30 min

Should I buy or lease this equipment? (small business)

Last verified: 2026-09-08

Not tax, accounting, or legal advice. No invented APR or Section 179 outcomes. You own the capex call.

Top picks

Best Overall

Claude

Holds labeled paths and paste-only rules without inventing numbers.

Open Claude

Best Free

ChatGPT Free

Fast scorecard + path labels from one pack.

Open ChatGPT

Best Power-User

Claude + second pass in ChatGPT

Tree in one; invented-fact / tone check in the other. Gemini is also solid. You own the call—AI only structures options.

Open Claude

Protocol

  1. Step 1 of 6

    Paste facts (5–8 min).

    Assemble only what you actually know. Mark gaps [MISSING] / [NEED FACT]. Do not invent rates, BATNA, legal outcomes, or benchmarks. This small-business purchase gate is not the weekly cash-position brief (snapshot) and not the lease-clause checklist (clause reading after you have a lease doc). Do not invent APR, residual values, or Section 179 outcomes.

    Paths at a glance

    PathLean this way when (from your paste)
    A — BuyUtilization high and sustained; cash or financing terms you pasted clear your hurdles; ownership fits horizon.
    B — Lease / financeCash preserved matters; you have real lease/finance quotes; term matches need horizon.
    C — Rent short-termNeed is temporary or utilization uncertain—rent quotes you have beat owning now.
    D — Defer / subcontractDemand unproven; subcontracting capability is available; wait for clearer utilization.
  2. Step 2 of 6

    Lock decision-tree rules (step 2).

    Paste the rules first so the model cannot mint APR, tax credits, Section 179 outcomes, or residual values.

    Copy-paste prompt

    Help me run a BUY vs LEASE equipment decision tree.
    Hard rules:
    - Use ONLY quotes, utilization, and cost facts I paste. Do not invent APR, tax credits, Section 179 outcomes, or residual values.
    - Mark tax topics [NEED ADVISOR] unless I pasted advisor numbers.
    - Paths: Path A Buy / Path B Lease/finance / Path C Rent short-term / Path D Defer/subcontract.
    - Not tax, accounting, or legal advice. I decide.
    Confirm in one sentence, then wait for my pack.
  3. Step 3 of 6

    Fill pack (step 3a) and generate (step 3b).

    Paste the pack, then send the generate command. The model must not pick a path for you.

    Paste pack

    EQUIPMENT / CAPABILITY NEEDED: [ ]
    PURCHASE PRICE QUOTE(S): [or MISSING]
    LEASE / FINANCE QUOTE(S) I HAVE (rate/term only if on the quote): [or NONE—do not invent APR]
    SHORT-TERM RENT OPTIONS: [or NONE]
    EXPECTED UTILIZATION (hours/jobs per period)—my estimate basis: [or MISSING]
    MAINTENANCE / INSURANCE / STORAGE COSTS I KNOW: [or MISSING]
    CASH / DEBT CAPACITY NOTES: [or MISSING]
    HORIZON (how long I need this capability): [ ]
    SUBCONTRACT ALTERNATIVE: [or NONE]
    TAX EFFECTS: [NEED ADVISOR unless advisor already gave numbers I paste]

    After you send the filled pack, copy the Generate command in the next box and paste it into the SAME chat so the AI runs the decision tree / produces the output.

    Generate command — copy and send this next (same chat)

    Build the decision tree now:
    1) Facts vs [MISSING]
    2) Scorecard table: Criterion | My fact | Lean (+/0/− or NEED FACT) | Note
    3) Path A Buy / Path B Lease-finance / Path C Rent short-term / Path D Defer or subcontract — for each: when it fits, what must be true from my pack, 3 owner-verify bullets
    4) Do NOT pick for me. Do not invent facts.
  4. Step 4 of 6

    Choose a path (step 4); optional wording.

    Only after you pick a labeled path. Owner-verify: facts still match your pack; [MISSING] gaps filled or accepted; any sendable wording uses only terms you authorize.

    Path wording

    I chose Path [A/B/C/D]. Draft an internal one-page decision note with Facts vs Assumptions vs Open questions from my pack only.
    No invented APR or tax savings. Mark [NEED ADVISOR] / [NEED FACT].
  5. Step 5 of 6

    Second-model check (step 5).

    In the other tool, paste the tree plus your pack:

    Second-model check

    Here is a buy-vs-lease tree from another assistant plus my pack.
    Find: (1) invented APR/residuals/tax savings, (2) utilization invented beyond my notes, (3) lease clause enforceability claims, (4) forced Buy or Lease.
    Return only corrections. Not tax advice.
  6. Step 6 of 6

    Human decide and act (step 6).

    Pick one path. Fill [NEED FACT] gaps from real sources. Send or implement yourself—AI drafts are not approvals, contracts, classifications, or tax elections. When reviewing a lease PDF later, use the lease clause checklist.

When not to

  • Not tax or accounting advice—do not treat chat as Section 179 guidance.
  • Do not invent APR or residual values missing from quotes.
  • Skip if you have no quotes or utilization basis—get those first.
  • When reviewing a lease PDF later, use the lease-clause checklist.

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