IRS/State Interest And Penalty Calculator

This is a combined IRS Interest Calculator and an IRS Penalty Calculator. Calculate interest and penalties on taxes in seconds instead of hours. IRS interest rates from 1954. 

When you order our software, you also get us.  We would be glad to help you use the program, step-by-step.  Simply call us at 1-800-326-6686.  Ask for Dave.

Who used this interest and penalty calculator?  Thousands of accountants for small and large clients, lawyers, the Internal Revenue Service (IRS), the US Government Accountability Office (GAO), Intel Corporation, Shell Oil, Equifax, UPS, Morgan Stanley, CNA Insurance, Texaco, Federal-Mogul, Kroger, Nevada Power....


Contents:

Requirements
Price
Overview
What Our Customers Have To Say...
State Support
Updates


Order Now!  Special discounted price for orders before 7/12/2008 $129Regular Price $149.

30 DAY UNCONDITIONAL GUARANTEE!

Requirements

Microsoft Windows.

Price

$149 (+$7 S/H). A FREE demo, dnt08310.exe (4,476kb), can be downloaded.	

Overview

  • If you have late returns to file, this program can save money.  Use this calculator to figure how much IRS interest is owed with the late returns.  If you pay the interest when the returns are filed, you are better off than waiting for the IRS to figure the interest.
  • If you have an IRS audit in progress, use this program to figure the IRS interest and penalties.  You are better off knowing this before the IRS sends out a notice.  You might even be able to use this information in your negotiations.
  • If you have payroll tax penalties, this calculator can often reduce penalties by suggesting the order that payments should be applied to liabilities.

Don't take the word of the IRS or the state on how much your clients owe in interest and penalties - they can be wrong! Use this program to calculate the interest and penalties on underpaid taxes.   This is both a tax interest calculator and a tax penalty calculator.  For over 19 years tax professionals have been using this program to plan and double check the IRS. In fact, the Internal Revenue Service offices are using this program to check their own calculations! Here's just a sample of why this program is so valuable:

It automatically calculates:

  • State support for AR, CA, FL, GA, ID, IL, KY, LA, MA, MD, MI, MN, MO, NY, PA, RI, SC, UT, VA, VT and WV.
  • Days between dates and interest rate factors.
  • Unlimited number of payments before settlement date.
  • The 120% tax motivated interest.
  • Failure to file and the .5% and 1% failure to pay penalties.
  • Penalties for late payment of payroll tax deposits. Thus, this program will calculate interest and penalties for both income tax and payroll tax situations.
  • Accuracy related penalties.
  • Calculates as far back as 1954!
  • Interest on refunds.
  • Corporate 2% interest increase after 1990.

For more comprehensive information, download the program's manual.

Since the IRS interest rate is objectively determined, the IRS interest computation is frequently used in determining interest on judgments. The IRS/State Interest & Penalty Calculator can be used to determine interest owed on judgments.

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What Our Customers Have To Say...

“Very user friendly, quick and accurate.”
Janice Lancaster, Denver, CO.

“Works great in a short period of time.”
Harry Rabin, EA, Harry Rabin & Co, El Cerrito, CA.

“Resolves a lot of headaches.”
Robert Mathers, The Hunter Group, CPA, LLC, Fair Lawn, NJ

“Great support to argue with the IRS.”
Ambrose Rouble, CPA, Southgate, MI

“Ease of use and accuracy of results, easy and regular updates.”
Ken Nilsestuen, Mentor, OH

Hear what other customers are saying...

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State Support

The penalty calculations strictly follow the Federal law. Thus, if the state penalty computation is *identical* to the Federal computation, you can use this program. If the state penalty computation is different, you can put it into the program as an Other Charge.

This program currently supports interest rates for AR, CA, FL, GA, MA, MO, ID, KY, SC, LA, MD, MN, UT, VT, V, VA, IL, MI and PA. Sometimes the states drag their feet in releasing interest rates. It is not unusual for us to release the program before all states have announced the new interest rate.  Click here to get the status of state rates and update state rate files for the program.

If you would like us to support other states, please email or fax us the information needed to create a state interest table. To create a state interest table, we would need to know the interest rates for each interest rate period, what rates are simple or compound interest, whether interest is computed differently for individuals compared to businesses, how frequently interest rates are to change, how interest rates are determined, and what is the best way to learn of future rate changes. Our email address is "info AT denvertax.com" (We are listing the email address this way to reduce SPAM! Replace the AT with @ and remove the spaces.), and our fax number is 303.796.7768. State rates will be added as time permits.

Order Now! Regular Price $149. Special discounted price for orders before 7/12/2008 $129.

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Updates

Current Calculator Version

As of May 3, 2008 we started shipping the 2008, Quarter 3 version, WINT2008Q3.10.  This version has verified IRS interest rates and IRS interest rate factors through September 30, 2008.

 
TOO BUSY TO MAKE THESE CALCULATIONS? OUTSOURCE TO US!

We have experience making these calculations.  For more information call 1-800-326-6686. (Minimum price $300.)

Mistakes The IRS Has Made Computing Interest & Penalties.
IRS Report 2002-10-187 (99KB) Dated September 2002. "The New Suspension of Interest Provision is Not Always Calculated Correctly"
How to compute interest on the telephone excise tax refund.
FIN 48 Information

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Denver Tax Software, Inc.
PO Box 632285, Littleton, CO 80163-2285
Voice: 1-(800)326-6686    Fax: 1-(888)326-6686

Copyright© 1997-2008, Denver Tax Software, Inc.