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
Download Our Free App
We’ve built a handy mobile app that allows you to easily stay in touch with us on-the-go wherever you are. Ask us questions, send and receive secure messages, request an appointment, get directions to our office, receive helpful notifications, and more.
Helpful Content
My Retirement Savings
Estimate how long your retirement savings may last using various monthly cash flow rates.
The ABCs of Zero Coupon Bonds
Understanding some basic concepts may help you assess whether zero-coupon bonds have a place in your portfolio.
Financial Aid for Students 101
Help your college-bound child explore scholarships, grants, and more with this article on paying for higher education.
How Does Your Credit Score Compare?
Have you ever wondered how your credit score compares to the rest of the country? Take a look and see.
Healthy Body, Healthy Pocketbook
Maintaining a healthy lifestyle can help you reduce health-related expenses—and avoid time in the recovery room.
The Half Million Dollar Baby
The true cost of raising a child may be far more than you expect.
5 Benefits of Working in Retirement
Here are 5 reason why you may consider working through retirement.
Social Security Benefits: How Much Will I Receive
Calculating your potential Social Security benefit is a three-step process.
The History of Currency
Currency has been around for a long time. Here’s a quick history lesson.
View all articles 
How Compound Interest Works
Use this calculator to better see the potential impact of compound interest on an asset.
Estimate Your RMD
Help determine the required minimum distribution from an IRA or other qualified retirement plan.
What Is My Current Net Worth?
Use this calculator to estimate your net worth by adding up your assets and subtracting your liabilities.
Bi-Weekly Payments
This calculator estimates the savings from paying a mortgage bi-weekly instead of monthly.
Comparing Investments
This calculator compares the net gain of a taxable investment versus a tax-favored one.
Tax Freedom Day
Assess how many days you'll work to pay your federal tax liability.
View all calculators
Managing Your Lifestyle
Using smart management to get more of what you want and free up assets to invest.
Your Cash Flow Statement
A presentation about managing money: using it, saving it, and even getting credit.
5 Smart Investing Principles
Principles that can help create a portfolio designed to pursue investment goals.
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.
5 Smart Investing Strategies
There are some smart strategies that may help you pursue your investment objectives
View all presentations
Bursting the Bubble
Tulips were the first, but they won’t be the last. What forms a “bubble” and what causes them to burst?
Charitable Giving: Smart from the Heart
Do you have causes that you want to support with donations?
When Markets React
When markets shift, experienced investors stick to their strategy.
Are Alternative Investments Right for You?
With alternative investments, it’s critical to sort through the complexity.
Supporting Local Business In a Crisis
Want to ensure your favorite local spots are around after the pandemic? Learn how to support your community in this video.
The Facts About Income Tax
Millions faithfully file their 1040 forms each April. But some things about federal income taxes may surprise you.