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MKS Instruments Families: Why a Letter of Instruction Can Simplify Estate Planning

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'MKS Instruments employees can bring more clarity to their estate plans by using a well-organized letter of instruction, which is a practical way to help families navigate important decisions with greater confidence.' — Michael Corgiat, a representative of The Retirement Group, a division of Wealth Enhancement.

'MKS Instruments employees can create a smoother transition for their families by using a clear letter of instruction, which can be an effective way to support loved ones during estate administration.' — Brent Wolf, a representative of The Retirement Group, a division of Wealth Enhancement.

In this article, we will discuss:

Why a letter of instruction can support your estate plan.
What to include in a letter of instruction.
How MKS Instruments employees can use a letter of instruction to help streamline estate administration.

Important Lessons

Estate planning documents like a will and a revocable trust are important, but they might not give your family all the information they need to handle your affairs when you pass away, especially for MKS Instruments employees with complex benefits.

In addition to an estate plan, a letter of instruction can offer your loved ones more information about your assets and personal preferences.

A letter of instruction can contain additional details, such as burial plans and the placement of essential documents, but it should not conflict with your estate planning documents.

Your loved ones might not know who to call, where to find your assets, or how to recognize reputable creditors if something were to happen to you today. By providing clear, supplemental guidance, a letter of instruction can help reduce the stress and work involved in the estate administration process.

A Letter of Instruction: What Is It?

A letter of instruction is an informal document outlining your assets and last wishes, sent to an executor, personal representative, or family members. It adds helpful information not included in legally binding estate planning documents like a will or revocable trust. For MKS Instruments employees managing multiple retirement and savings plans, a letter of instruction can help simplify administration for family members, even though it is not legally required.

Since this letter is informal, it can be updated without consulting an attorney as circumstances change over time. It can contain supplementary information that supports your estate plan, but it should not contradict anything in your legal estate planning documentation.

How to Compose an Instructional Letter

Funeral Plans

You might provide information about your preferred funeral or burial type, funeral home, clergy member, music, speakers, or tribute. You can also include details about pre-paid or pre-arranged funeral or burial plans and where related paperwork is located. Some people also provide biographical details—something MKS Instruments retirees can include for clarity.

Crucial Records

You can note the location of your Social Security card, recent bank account statements, deeds, titles, mortgage documents, important records, and estate planning documents. Some individuals also indicate where to find recent tax returns, which may help identify assets or income sources. If these documents are stored in a lockbox or vault, providing access instructions may be helpful.

Contact Details for Financial Representatives

The names and contact information for bankers, tax preparers, lawyers, insurance agents, real estate agents, and financial advisors can be included in the letter. These professionals can assist with background information, asset identification, account transfers, and final tax filings.

Details of the Assets

You can list your assets’ locations, titling, identifying details, and current values. This may include real estate, stock certificates, savings bonds, annuities, time shares, bank accounts, brokerage accounts, retirement accounts, company interests, safe deposit boxes, life insurance, and personal belongings with monetary or sentimental value.

Computer Files and Online Accounts

You may wish to list your digital files and accounts and designate a successor in your estate planning documents to manage them, since state and federal laws may limit access without written approval. For MKS Instruments retirees who store retirement and benefits information online, this documentation may help reduce challenges.

Details of Debt

You can include information regarding your debts, such as account numbers, balances, statements, and lender contact details.

Beneficiary Details

The beneficiaries listed in your estate plan, along with their contact details, may be included in the letter. This makes it easier for an executor to locate and communicate with those who will receive assets—an important step for families with MKS Instruments retirement accounts.

Pets

You can specify who you want to care for your pets and any specific instructions if your estate documents do not mention them. You may also include your veterinarian’s contact information.

Distribution List for Personal Property

Some states allow individuals to draft a separate document listing specific items of tangible personal property and their intended recipients, as long as the will references the list. Even in states where this is not legally binding, a letter of instruction can still guide your executor and help minimize disagreements.

Private Notes and Clarification of Goals

Some people include private notes or explanations for their decisions regarding inheritance or financial principles. Although not legally binding, these notes can help prevent misunderstandings.

What Does a Letter of Instruction Not Need to Include?

A letter of instruction should not repeat information already found in your estate planning documents. It is intended to provide additional details only.

It also should not be used to make changes to legally enforceable estate documents. Informal updates are not binding and may create conflicts.

Where to Store Your Instruction Letter

You can keep a copy of the letter with your estate planning papers, provide one to your lawyer, or place it somewhere your family is likely to look first. You can also share a copy with your executor and discuss it with them if you feel comfortable. Updating the letter each year is useful as assets and personal information change—particularly for MKS Instruments employees with evolving retirement benefits.

Do You Need Guidance?

The Retirement Group can help you prepare for retirement if you are updating or creating your estate plan and want assistance organizing your family’s financial information. Call us at (800) 900-5867 .

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Sources:

1. Parker, Craig. “How to Write a Letter of Instruction: A Step-by-Step Guide.” Trust & Will, n.d.,
https://trustandwill.com/learn/how-to-write-a-letter-of-instruction . Accessed 1 Dec. 2025.

2. AARP Education & Outreach. “State Your Intentions With a Letter of Instruction.” AARP, 9 Nov. 2022,
https://www.aarp.org/money/retirement/letter-of-instruction/ . Accessed 1 Dec. 2025.

3. Kuffel, Hunter. “Writing a Letter of Instruction for Your Estate Plan.” SmartAsset, 12 Oct. 2025,
https://smartasset.com/estate-planning/letter-of-instruction . Accessed 1 Dec. 2025.

4. McDonald Jacobs. “Letter of Instruction in Estate Planning.” McDonald Jacobs: Portland, Oregon Accountants & Business Consultants, n.d.,
https://www.mcdonaldjacobs.cpa/letter-of-instruction-in-estate-planning/ . Accessed 1 Dec. 2025.

What is the 401(k) plan offered by MKS Instruments?

The 401(k) plan at MKS Instruments is a retirement savings plan that allows employees to save a portion of their paycheck before taxes are taken out.

How can I enroll in the MKS Instruments 401(k) plan?

You can enroll in the MKS Instruments 401(k) plan by completing the enrollment form available through the HR portal or by contacting the HR department for assistance.

Does MKS Instruments offer a company match for the 401(k) contributions?

Yes, MKS Instruments provides a company match for employee contributions to the 401(k) plan, subject to specific terms and conditions.

What is the maximum contribution limit for the MKS Instruments 401(k) plan?

The maximum contribution limit for the MKS Instruments 401(k) plan aligns with IRS guidelines, which are updated annually.

Can I change my contribution percentage for the MKS Instruments 401(k) plan?

Yes, employees can change their contribution percentage for the MKS Instruments 401(k) plan at any time by submitting a request through the HR portal.

What investment options are available in the MKS Instruments 401(k) plan?

The MKS Instruments 401(k) plan offers a variety of investment options, including mutual funds, stocks, and bonds, allowing employees to choose based on their risk tolerance.

When can I access my funds in the MKS Instruments 401(k) plan?

Employees can access their funds in the MKS Instruments 401(k) plan upon reaching retirement age, or under certain circumstances such as hardship withdrawals.

What happens to my MKS Instruments 401(k) plan if I leave the company?

If you leave MKS Instruments, you can either roll over your 401(k) balance to another retirement account or leave it in the MKS Instruments plan, subject to plan rules.

Does MKS Instruments allow loans against my 401(k) balance?

Yes, MKS Instruments may allow employees to take loans against their 401(k) balance, subject to specific terms and conditions outlined in the plan.

Are there any fees associated with the MKS Instruments 401(k) plan?

Yes, there may be fees associated with managing the MKS Instruments 401(k) plan, which are typically disclosed in the plan documents.

With the current political climate we are in it is important to keep up with current news and remain knowledgeable about your benefits.

Name of Pension Plan: MKS Instruments does not offer a traditional pension plan. The company primarily provides a 401(k) plan for its employees. Years of Service and Age Qualification: MKS Instruments does not have a pension plan, so there are no qualifications related to years of service or age for a pension. Name of 401(k) Plan: The 401(k) plan at MKS Instruments is simply referred to as the "MKS Instruments 401(k) Plan." Eligibility and Qualification: Eligibility: Employees are eligible to participate in the MKS Instruments 401(k) Plan immediately upon hire. Qualification for Matching Contributions: The company offers a matching contribution to eligible employees. To qualify for the company match, employees must contribute a percentage of their salary to their 401(k) account. Specific details regarding the match percentage can be found in the company's plan document.

Restructuring and Layoffs: In early 2024, MKS Instruments announced a restructuring plan aimed at streamlining operations and reducing costs. This includes a reduction of approximately 5% of its workforce, focusing on consolidating roles and improving efficiency. This decision comes amidst a challenging economic climate and increased operational costs. The company’s efforts are designed to enhance its competitive position and adapt to market fluctuations. Benefit Changes: MKS Instruments has also revised its employee benefits package to better align with current financial constraints. Changes include adjustments to healthcare contributions and modifications to its retirement benefits plan. These changes reflect the company's response to evolving economic conditions and aim to sustain long-term financial health. It is crucial to monitor these updates due to their potential impact on employee satisfaction and overall company stability in the current economic environment.

Stock Options: MKS Instruments provided stock options as part of their employee compensation package. The company’s stock option plans are detailed in their 2022 10-K filing. RSUs: Restricted Stock Units (RSUs) were also available to employees, offering equity-based compensation.

Health Benefits Overview: MKS Instruments offers comprehensive health benefits to its employees, including medical, dental, and vision insurance. They provide both PPO (Preferred Provider Organization) and HMO (Health Maintenance Organization) plans. 2023 Updates: The company introduced a new High Deductible Health Plan (HDHP) in 2023 with Health Savings Account (HSA) eligibility. They also improved the employee wellness program, including mental health resources