Tax season is COMING!


We're Lank, Johnson & Tull, a Delaware CPA firm. This year, we'd like to help you prepare your tax return and maximize your IRS tax refund! Own a business? We offer a variety of accounting services that would be perfect for it too.

Schedule a free consultation!


About Us

Who we are

Lank, Johnson & Tull, Certified Public Accountants (CPAs) is a full service Delaware CPA firm specializing in tax return preparation, governmental and nonprofit audits, business consulting and many other accounting services.

With convenient locations in both Seaford and Milford, Lank, Johnson & Tull, CPAs has been operating continuously since 1975. The firm has an approximate annual retention rate of 90% and the majority of its clients have been using their services for more than five years. In 2014, the firm merged with Messick, Ruff & Company and has experienced significant growth in recent years, largely in part due to the personal and professional successes of its loyal clientele.

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At Lank, Johnson & Tull, CPAs our philosophy is based on two essential cornerstones: building strong relationships with our clients and demonstrating exceptional professional competence.

Our Delaware CPA firm works tirelessly to forge lasting relationships with all of our clients and to provide them with the knowledge and expertise that they deserve all year round. As a matter of fact, many of our clients’ adorable dependents have grown up to become some of our favorite primary filers. Today, entire family trees grow and branch out from the very foundation of our accounting firm, a foundation that was laid over forty years ago.

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Meet our Accounting clients

They're awesome!

Sole Proprietors
Our Advantage Services line is comprised of three essential services: Advantage Tax Preparation, Advantage Bookkeeping and Advantage Business Adviser. These products are intended primarily for new clients and are considered our basic offerings. Click the checkmarks to learn more.
Our Advantage Tax Preparation service includes strategic tax planning and tax return prep for individuals. Staff accountants are trained to consider all relevant Internal Revenue Service rules and regulations, as well as to assess the current economic and political climate in which you live and do business. Such considerations are key to effective tax planning with the goal of minimizing your tax liability.
Our Advantage Bookkeeping service is a full service bookkeeping solution for small businesses. With the help of Advantage Bookkeeping, you can spend more time focusing on your business while our certified Delaware accounting firm handles all of those monotonous day to day bookkeeping tasks. From billing to payroll, we've got it covered.
Our Advantage Business Adviser service includes strategic tax planning and tax returns for businesses, financial statement preparation and reporting, and Quickbooks support. Whether you’re establishing a brand new startup, or a seasoned business with years of operational experience; we’ll act as your closest ally, helping you to reduce your tax liability and maximize profitability.


On average, we help our clients collect $3.7 million (approx. $3,709,353) in tax refunds annually.

Get Your Refund

Advantage Services

Select a Plan


  • For businesses
  • Daily Accounting
  • Quickbooks Support
  • Cloud Available
  • Free Consultation

Business Adviser

  • For Businesses
  • Full Tax Strategy
  • Financial Statements
  • Quickbooks Support
  • Free Consultation

Tax Preparation

  • For Individuals
  • Tax Planning
  • Tax Return
  • E-file Available
  • Free Consultation

À La Carte

  • For Everyone
  • Mix & Match Services
  • Free Consultation

One Big Happy Family

We have an average retention rate of 90% and the majority of our clients stay with us for more than 5 years!

Join the Family

With More than 2500 Satisfied Clients

With their guidance, our accounting and payroll processes are now more efficient and seamless. We consider Lank, Johnson and Tull, CPAs an asset to our company.

Jessica H

Jessica H,

R. Addington Co.

They have helped me out tremendously when it comes to saving money on taxes. I would recommend Lank, Johnson and Tull, CPAs to anyone in need of an accountant.

Leland A

Leland A.

Delaware Custom Tileworks LLC

We were treated with the highest professionalism and have complete confidence that our business and personal tax returns will be competently handled in the future.

Darrin and Laura S

Darrin & Laura S.

Blue Hen Construction LLC

Our Locations

Where you can find us

Office Locations

521 N. Market Street Extended, Seaford, Delaware 19973

268 Milford Harrington Highway, Milford, Delaware 19963

Call Us

Phone: (302) 629-9543
Fax: (302) 629-3501

Phone: (302) 422-3308
Fax: (302) 422-4782

Working Hours

Monday - Friday, 8:00AM - 5:00PM

Monday - Friday, 8:00AM - 5:00PM