"The tax return is too difficult for a mathematician,

It takes a Philosopher."

— Albert Einstein

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Welcome to McKernan Corp on the web Thanks for visiting

For more Americans than realize it, doing their taxes is more than just filling out a set of difficult forms. There is a philosophy, best summed up by …

There is nothing sinister in so arranging one's affairs as to keep taxes as low as possible. Everybody does so, rich and poor; and all do right, for nobody owes any public duty to pay more than the law demands.

— Justice Learned Hand

The McKernan Corp is a Tax Consulting–Accounting firm, located on Rte 202 in King of Prussia, Pennsylvania — one of the principal commercial and residential hubs in the western Philadelphia suburbs.

Since our founding 50 years ago in 1971, our focus has been on providing friendly, relaxed and knowledgable tax-related service to our clients — small- to medium- sized businesses and individuals. We are a small, local firm and take a personal interest in the needs of our clients

Let us put our experience to work for you!

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Next Estimated Tax Due Dates

If it seems that tax due dates are always just around the corner — it's because they are. Don't miss those important Estimated Tax Payments.


4th Quarter Estimate Due:
Tue, Jan 18, 2022
(87 days)

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4th Quarter Estimate Due:
Wed, Dec 15, 2021
(53 days)

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