Delaware State Income Tax Data Sheet


© 2019

Tax Bracket (Single) [2] Tax Bracket (Couple) [3] Marginal Tax Rate
$2,000+ $2,000+ 2.20%
$5,000+ $5,000+ 3.90%
$10,000+ $10,000+ 4.80%
$20,000+ $20,000+ 5.20%
$25,000+ $25,000+ 5.55%
$60,000+ $60,000+ 6.60%

Local tax rates are excluded in Delaware and 14 other states that have county or city level income taxes. In Delaware the average income tax rate for counties and large municipalities, weighted by total personal income within each jurisdiction, is 0.16% (Tax Foundation Background Paper, No. 58, "2009 State Business Tax Climate Index").

If you have a question about your Delaware tax return, you can contact the Delaware Department of Finance via email at [email protected] or call the general income tax helpline at 302-577-8200. For refund assistance call 302-577-8784, and for assistance with monthly installments call 302-577-8586.

Delaware State Income Tax Deductions

Income tax deductions are expenses that can be deducted from your gross pre-tax income before determining your taxable income.

Delaware Standard Deduction

The Delaware standard deduction is $3,250.00 for individuals and $6,500.00 for married couples filing jointly. The standard deduction may be chosen instead of filing an itemized deduction on your Delaware tax return.

Delaware Personal Exemptions

Delaware's personal income tax exemptions include a personal exemption of $110.00. You can deduct one single exemption from your gross income if you are responsible for supporting yourself financially.

Delaware Dependent Deduction

Delaware has a dependent exemption of $110.00. You may claim one dependent exemption for each of the children, relatives, or others who live with and are supported by you as described § 152 of the IRC (Internal Revenue Code).

Delaware Itemized Deductions

Delaware allows itemized deductions, and you can claim the same itemized deductions on your Delaware tax return as you do on your Federal tax return. You must choose between itemizing your deductions and choosing the Delaware standard deduction, so it's generally only worth itemizing your deductions if your itemized total is more then the Delaware and Federal standard deductions.

Delaware State Income Tax Data Sheet


© 2019

Web Resources:

Division of Revenue Website:

Delaware Tax Forms:

Delaware Income Tax Information:

Delaware Tax Refund Portal:

Important Tax Addresses:

Income Tax Returns (Zero Balance)
Department of Finance
P.O. Box 8711
Wilmington, DE 19899-8711;

Income Tax Returns (Refund Owed)
Department of Finance
P.O. Box 8765
Wilmington, DE 19899-8765;

Income Tax Returns (Balance Due)
Department of Finance
P.O. Box 508
Wilmington, DE 19899 - 508;

New Castle County
Carvel State Office Building
820 North French Street
Wilmington, DE 19801
Phone: 302.577.8200

Kent County Thomas Collins Building
540 S. Dupont Highway
Dover, DE 19901
Phone: 302.744.1085
Sussex County
20653 Dupont Blvd. Suite 2
Georgetown, DE 19947
Phone: 302.856.5358

Hotline: 1-800-292-7826 (Delaware Only);