Trust Services
401k Sponsorships
IRA Retirement Plans
The South Dakota Advantage
Build, Manage, and Preserve Wealth for Generations to Come
Cornerstone Private Asset Trust Company, LLC, is boutique trust company that helps businesses and individuals implement estate planning goals and transition wealth from one generation to the next. It provides services above and beyond those of a traditional trust company by focusing on the individual nature of each client and their long-term goals.
An independent public trust company based in Sioux Falls, South Dakota, Cornerstone provides unique tax advantages to its clients as well as a wide variety of specialized trust services, including trusts under wills as well as dynasty, charitable, revocable living trusts.
In the retirement plan area, Cornerstone develops plans to meet the needs of the employees, the company and the owners. It specializes in working with business owners who excel at running their businesses, but do not want to be experts in retirement planning. Cornerstone works as a retirement planning partner keeping business owners informed on the status of their plans as well as their fiduciary responsibility as the plan sponsor of the company’s retirement program.
Contact Us
Helpful Content

Caring for Aging Parents
As our nation ages, many Americans are turning their attention to caring for aging parents.

The ABCs of Zero Coupon Bonds
Understanding some basic concepts may help you assess whether zero-coupon bonds have a place in your portfolio.

Should You Tap Retirement Savings to Fund College?
There are three things to consider before dipping into retirement savings to pay for college.
Is a SEP-IRA Right for Your Business?
For some, the idea of establishing a retirement strategy evokes worries about complicated reporting and administration.
A Taxing Story: Capital Gains and Losses
Understanding how capital gains are taxed may help you refine your investment strategies.
Please Leave Home Without It
Concerns over identity theft continue to grow, especially with data breaches at major companies and financial institutions.
Putting a Price Tag On Your Health
Being healthy not only makes you feel good, it may also help you financially.
Countering Counterfeit Currency
Combating counterfeiting remains core to preserving the integrity of the nation’s money.
Travel, Without the Baggage
Tips to avoid checking in luggage on your next vacation.
View all articles 
Estimate Your RMD
Help determine the required minimum distribution from an IRA or other qualified retirement plan.
Annuity Comparison
This calculator compares a hypothetical fixed annuity with an account where the interest is taxed each year.
Interested in a Fuel Efficient Car?
Estimate how many months it may take to recover the out-of-pocket costs when buying a more efficient vehicle.
Taxable vs. Tax-Deferred Savings
Use this calculator to compare the future value of investments with different tax consequences.
Paying Off a Credit Card
Enter various payment options and determine how long it may take to pay off a credit card.
Impact of Taxes and Inflation
Estimate the potential impact taxes and inflation can have on the purchasing power of an investment.
View all calculators 
An Inside Look at Retirement Living
A number of questions and concerns need to be addressed to help you better prepare for retirement living.
Investment Strategies for Retirement
Investment tools and strategies that can enable you to pursue your retirement goals.
Principles of Preserving Wealth
How federal estate taxes work, plus estate management documents and tactics.
Managing Your Lifestyle
Using smart management to get more of what you want and free up assets to invest.
5 Smart Investing Strategies
There are some smart strategies that may help you pursue your investment objectives
5 Smart Investing Principles
Principles that can help create a portfolio designed to pursue investment goals.
View all presentations 
The Cost of Procrastination
Procrastination can be costly. When you get a late start, it may be difficult to make up for lost time.
Global and International Funds
Investors seeking world investments can choose between global and international funds. What's the difference?
It May Be Time for a Financial Checkup
It’s never a bad time to speak with your financial professional about changes in your situation.
Leaving Your Lasting Legacy
Want to do more with your wealth? You might want to consider creating a charitable foundation.
The Richest Man in Babylon
In good times and bad, consistently saving a percentage of your income is a sound financial practice.
Inflation and Your Portfolio
Even low inflation rates can pose a threat to investment returns.