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Side Business Tax Guide for Georgia

Income tax rate: 1–5.75% | Self-employment: Federal 15.3% self-employment tax applies to all net earnings from your side business ($142,800 wage base for Social Security portion, unlimited for Medicare). Georgia: Relatively low brackets.

Sales tax note: State rate 4%. Local jurisdictions may add additional sales tax.

Estimated Tax Burden

RevenueTotal RateEstimated Tax
$10,000 18.2% $1818
$30,000 18.2% $5453
$50,000 18.2% $9088
$100,000 18.2% $18175

Available Tax Credits

Qualified Business Income (QBI) Deduction

Federal deduction of up to 20% of qualified business income for pass-through entities (LLC, sole proprietorship). Phaseout starts at $191,950 (single) / $383,900 (joint, 2025).

Home Office Deduction

Deduct $5/sq ft (up to 300 sq ft, max $1,500) or actual expenses. Available if you use part of your home exclusively and regularly for business.

Equipment Deduction (Section 179)

Deduct up to $1.22M (2025) in business equipment purchases in the year placed in service, rather than depreciating over time.

Startup Cost Deduction

Deduct up to $5,000 in startup costs (legal, marketing, research) in your first year of active business.

Health Insurance Premiums

Self-employed individuals can deduct 100% of health insurance premiums for themselves and dependents, above-the-line (no itemizing needed).

Retirement Plans (SEP IRA)

Contribute up to 25% of net earnings (max $70,000 for 2025) to a SEP IRA. Contributions are tax-deductible and grow tax-deferred.

Internet & Phone

Deduct a percentage of your internet and phone bills based on business usage. If you have a dedicated business line, it's 100% deductible.

Vehicle Mileage

Deduct 70¢/mile (2025 IRS rate) for business driving. Keep a mileage log. Standard mileage rate includes gas, maintenance, depreciation.

Georgia Small Business Credit

Georgia offers various tax credits for small businesses. Check GA Department of Revenue for current offerings specific to your industry and revenue level.

Deductions for Side Businesses in Georgia

  • One-half of self-employment tax (deducted above the line)
  • Business insurance premiums (liability, professional, cyber)
  • Software subscriptions (tools, SaaS, cloud services)
  • Professional fees (accountant, bookkeeper, attorney)
  • Education and training (courses, conferences, books)
  • Office supplies and small equipment
  • Marketing and advertising expenses
  • Travel and meals (80% deductible for business meals)
  • Interest on business loans or credit cards
  • Bank fees and merchant processing fees

Key Deadlines

Filing deadline: Federal: April 15, 2026. Georgia (GA): Same date as federal (most states) or March 15 if fiscal year-end. Extensions to Oct 15 available.

Quarterly payments: Federal: Make estimated quarterly tax payments using IRS Form 1040-ES (federal) and your state equivalent. Penalties apply if you owe more than $1,000 at filing time. Pay by April 15, June 15, Sept 15, Jan 15. Georgia (GA): File quarterly state estimates using the state's equivalent of Form 1040-ES. Payment thresholds and due dates generally mirror federal.

Frequently Asked Questions

Do I need to pay estimated quarterly taxes in Georgia?

Yes, if you expect to owe more than $1,000 in federal tax on your side business income. Georgia also requires quarterly payments if your state tax liability exceeds certain thresholds. The QBI deduction reduces your taxable income, so calculate estimated taxes on after-deduction profit.

How does self-employment tax work for a side business in Georgia?

Self-employment tax (15.3%) is federal — it's the same in every state. However, half of it is deductible on both federal and Georgia returns. If Georgia has no income tax (like TX, FL, NV), you only pay federal SE tax plus any state sales tax obligations.

Can I deduct my home office in Georgia?

Yes, the home office deduction is federal and follows IRS rules in Georgia. You can use the simplified method ($5/sq ft, max $1,500) or actual expenses. Georgia generally follows federal rules but may have different forms — check Georgia Department of Revenue instructions.

What sales tax obligations does a side business have in Georgia?

Georgia requires sales tax collection if you sell physical products or certain digital services to customers within the state. You likely need a sales tax permit. Sales tax rates vary by locality and product type.

What happens if I don't report side business income in Georgia?

Failure to report can trigger audits, penalties, and interest. Most states share information with the IRS. If your side business is structured as an LLC, the state may require annual reports and franchise tax payments regardless of profitability.

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