Philadelphia Business Tax: BIRT Rates, Rules and Deadlines

Philadelphia Business Taxes at a Glance

Philadelphia business tax rules apply to for-profit firms that work in the city. This includes LLCs, corporations, partnerships, and sole proprietorships. The main local tax is the Business Income & Receipts Tax, or BIRT.

BIRT has two parts. One part uses gross receipts. The other uses net taxable income. For tax year 2025, the rates are 1.410 mills on gross receipts and 5.71% on net taxable income.

Every covered business must file a BIRT return. This duty remains even when the business had no profit. A return shows the city that the business met its filing duty.

Most businesses also need a Commercial Activity License, known as a CAL. The license lets a business conduct activity in Philadelphia. A tax account does not replace the license.

• Register the business with the city before trading.
• Get a Philadelphia tax account number.
• Track city receipts and business costs.
• File a BIRT return each year.
• Pay any balance by the stated due date.

What the Business Income & Receipts Tax Covers

BIRT can apply to income earned from work, sales, services, or other business activity. The city looks at both receipts and profit. A business may owe the receipts part even when its profit is small.

The gross receipts rate is 1.410 mills for the 2025 tax year. One mill equals one dollar per thousand dollars of receipts. That rate equals 0.1410% of taxable gross receipts.

The net income rate is 5.71%. It applies to net taxable income after allowed costs and adjustments. The city may use special rules for firms based outside Philadelphia.

For example, a firm may earn $200,000 from city work. Its taxable profit may be $40,000. It must review both tax parts. The higher required amount can affect the final bill.

Use the city’s current rate table before filing. The Philadelphia BIRT tax guidance gives the official rules and forms.

Who Must File and Which Numbers Matter

Philadelphia requires a BIRT return from each covered business. This rule includes firms with no net profit. It can also cover a business that had no city tax due.

To file, owners need a Philadelphia business tax account number. This number links returns, payments, and city notices. Keep it with the business records.

A state business tax account number is different. Pennsylvania may issue a state tax account number for state tax matters. It does not replace the Philadelphia number.

A VAT account number is not the normal term for a United States city tax account. VAT is a value-added tax system used in many other countries. Philadelphia businesses should use the city account details shown in their tax records.

New firms should set up their city account before filing time. Owners should also check whether the business needs a CAL. The city may ask for both items during a review.

Records to keep before filing

• Federal and state business returns
• Sales records and invoices
• Payroll and contractor records
• Rent, supply, and other cost records
• Prior BIRT returns and payment proof

Why the 2025 BIRT Exemption Change Matters

Philadelphia removed the $100,000 gross receipts exemption for tax year 2025. This change affects many small firms. A business that once filed with no receipts tax may now owe BIRT.

The change does not remove the filing duty. All covered businesses must still file a return. Owners should not skip a return because sales were below $100,000.

Consider a shop with $80,000 in taxable receipts. Under the old exemption, that amount could fall below the receipts threshold. Under the 2025 rule, the shop must review the 1.410-mill rate.

The exact bill can depend on apportionment and other tax rules. Keep clear records for city activity. Ask a tax professional to review mixed city and non-city sales.

Small firms should update their cash plan for the change. Set aside funds during the year. This step can prevent a large surprise when the return is due.

Filing, Estimated Payments, and Due Dates

The annual BIRT return is generally due April 15. The date can shift when April 15 falls on a weekend or holiday. Check the city calendar for the filing year.

Estimated tax payments are also generally due by April 15 each year. New businesses follow a different rule after their first filing. The city may not require the same estimated payment schedule at the start.

Read each notice from the city. It may show a balance, a payment plan, or a future estimate. Do not rely on an old date from a prior return.

1. Gather receipts and cost records for the tax year.
2. Confirm the Philadelphia tax account number.
3. Work out gross receipts and net taxable income.
4. File the BIRT return through the city’s approved method.
5. Pay the balance and save the confirmation.

File on time even when payment funds are short. A timely return can limit one type of penalty. Contact the city at once if the business cannot pay in full.

Penalties, Collections, and Business Risk

Late filing can lead to penalties and interest. Late payment can add more charges. The total cost grows when a business ignores city notices.

Failure to file may also harm the business license record. In serious cases, the city can suspend business operations. That can block lawful trading until the issue is fixed.

Act early after a missed deadline. File the missing return first. Then ask the city about the balance and any relief options.

• Check every tax notice against your records.
• Correct errors before the city starts collection work.
• Ask about a payment plan when cash flow is tight.
• Keep proof of filing and payment for each year.

Professional help can make sense for firms with several owners. It can also help when receipts cross city lines. Simple records make that review faster and cheaper.

Tax Credits and Help for Small Businesses

Philadelphia offers tax credits and aid programs for some businesses. Eligibility can depend on location, hiring, investment, or industry. A credit may lower tax, but it does not erase the filing duty.

Review each program’s current rules before claiming it. Some credits need an application before work begins. Others require proof of wages, spending, or city activity.

The Philadelphia Free Business Tax Preparation Program helps small businesses with tax filings. It can help owners understand forms and basic filing steps. This service is useful after the 2025 exemption change.

Bring account details and records to a tax help session. Include prior returns, sales totals, and payment notices. The adviser can spot missing forms or questions for a tax expert.

The city’s Philadelphia business tax services page lists filing tools, payment options, and help programs.

Useful Resources for Philadelphia Business Owners

Start with the city tax portal and your latest tax notice. The portal can show account details, forms, balances, and payment choices. Use the same account data on each return.

Keep a yearly tax file for the business. Store returns, receipts, payment records, licenses, and city letters together. Digital copies should have clear file names and backup storage.

Ask for help when the business has unusual facts. Examples include remote work, several locations, or a new legal owner. A tax adviser can also test whether costs count as deductions.

Need	Best first step
City tax number	Check the Philadelphia tax account record
Annual return	Use the current BIRT form and instructions
License question	Review Commercial Activity License rules
Missed payment	Contact the city before more notices arrive
Small-business filing help	Ask about the free tax preparation program

Philadelphia business tax rules can change by tax year. Check official city guidance before each filing. This matters most for rates, exemptions, and payment dates.