Personal vs Business Expense Separator
Personal Finance for Entrepreneurs
Quick Answer
List your expenses and describe how they are used. Paste into Claude or ChatGPT. Get a deductibility assessment for each expense with documentation requirements and correct tax treatment.
What You Get
An expense classification analysis covering deductibility assessment for each expense, correct tax treatment explanation, documentation requirements for each deductible expense, partially deductible mixed-use expense calculation, and a list of commonly missed deductions for the business type.
Who Is This For
Self-employed founders managing their own bookkeeping, business owners preparing for tax filing, and entrepreneurs who want to understand which of their expenses are deductible before meeting their accountant.
About This Template
The line between personal and business expenses is one of the most common sources of tax errors and audit risk for self-employed founders and business owners. Expenses that are deductible only if correctly documented, partially deductible mixed-use items, and expenses that are never deductible are often confused. This template guides business owners through entering their expense categories, then uses AI to classify each expense, explain the correct tax treatment, and document the evidence required to support the deduction.
Fill In Your Details
e.g. freelance consultant, SaaS startup, e-commerce business, professional services
e.g. iPhone $1,200 — used 70% for business calls and apps, 30% personal
e.g. Home internet $1,800/year — used for work from home office
e.g. Business dinners $4,200 — client entertainment throughout the year
e.g. Car lease $8,400/year — used 60% for client visits, 40% personal
e.g. LinkedIn Premium $575/year — for lead generation and networking
Add any other mixed or questionable expenses
Gather these details then use them to fill in the prompt below.
AI Prompts
Generate expense classification analysis
Paste this prompt into Claude or ChatGPT with your expenses filled in.
You are a tax advisor helping a business owner correctly classify personal and business expenses. Using the expenses listed below, produce a clear analysis of each expense's deductibility. Business type: [business_type] Expense 1: [expense_1] Expense 2: [expense_2] Expense 3: [expense_3] Expense 4: [expense_4] Expense 5: [expense_5] Expense 6: [expense_6] For each expense produce: - Deductibility classification: Fully deductible, Partially deductible, 50% deductible (meals), or Not deductible - Deductible amount based on the business use percentage stated - Documentation required to support the deduction - IRS rule or code section that governs this expense type - Any risk flags — expenses that could attract audit attention Then produce: - Total Deductible Amount — sum of all deductible portions - Commonly Missed Deductions — additional deductions for this business type not mentioned Note: this is educational guidance only. Consult a qualified CPA before filing. Tax laws change and individual circumstances vary.
Sample Output
This is an example of what AI produces when you use this template.
iPhone Classification
Classification: Partially deductible. Deductible amount: $1,200 multiplied by 70% business use equals $840. Documentation required: log of business calls and apps, written record of business use percentage calculation. Keep the phone on your business accounting records as an asset if over $2,500. Risk flag: the IRS scrutinizes cell phone deductions — maintain a clear business use log for at least 3 months to establish the 70% pattern. Do not claim 100% deductibility for a personal cell phone plan even if you use it heavily for work.
Commonly Missed Deductions
For a SaaS startup, additional deductions often missed: 1. Software subscriptions directly related to building or running the product (GitHub, Figma, AWS, Vercel, Supabase) — fully deductible. 2. Professional development (online courses, conference tickets, books directly related to your business) — fully deductible with receipts. 3. Health insurance premiums — self-employed founders can deduct 100% of health insurance premiums paid for themselves and family as an above-the-line deduction, reducing both income and self-employment tax. This is one of the most valuable and frequently missed deductions for solo founders. 4. Bank fees and payment processing fees (Stripe fees, wire transfer fees) — fully deductible as business expenses.