Tax and document literacy for the next generation

Families sometimes build an education plan for the next generation covering investing, philanthropy, and family history. Those subjects belong to the family and its advisors. The tax and document part of that plan is narrower and more practical: what a young adult needs to know to file their own returns correctly, read the forms they receive, keep the records they will need later, and work with a preparer. Heirs who learn this early are less likely to miss filings, lose basis, or sign documents they do not understand.

This post outlines tax and document literacy for heirs and young adults in households with entities, trusts, or several states. It is not a financial education program, it does not cover investing, and it is not legal advice. It is a checklist of tax skills, in rough order, with 2026 figures where they apply.

Stage one: their own return

Start with what applies to them now.

• Filing requirement. A young adult must file if gross income exceeds the standard deduction for their filing status, which for 2026 is $16,100 for a single filer, or if they have self-employment income of $400 or more. A dependent with unearned income may need to file at much lower amounts.
• Kiddie tax. For 2026, a dependent child's unearned income above $2,700 is generally taxed at the parent's rate. It applies to children under 18, and to full-time students under 24 whose earned income does not cover more than half their support. Wages are never subject to it.
• W-2 and W-4. How to read a W-2, how to complete a W-4 at a new job, and why withholding matters.
• Forms 1099. 1099-INT, 1099-DIV, 1099-B, and 1099-K, and what each means. For 2026, the 1099-K threshold for payment apps and marketplaces is more than $20,000 and more than 200 transactions, but the income is taxable regardless of whether a form arrives.
• Roth IRA. A young adult with earned income can contribute up to the lesser of their earned income or $7,500 for 2026. Records of contributions matter decades later, because contributions can come out tax free.

Stage two: family entity and trust forms

Once they hold interests in family entities or are trust beneficiaries:

• Schedule K-1. What the boxes mean, why it often arrives late, why it can show income without cash, and why it may require returns in other states.
• Trust distributions. How a non-grantor trust's distributions carry income to the beneficiary, and why a trust that keeps its income pays tax at high rates quickly (the top federal bracket starts at about $16,000 of taxable income for a trust in 2026).
• Grantor trusts. Why some trusts never send them a K-1 because the grantor reports the income.
• Operating agreements and trust documents. Not to interpret them, which is counsel's job, but to know they exist and what they control.

Stage three: gifts and basis

• Annual exclusion. Gifts up to $19,000 per recipient in 2026 do not require a gift tax return. Larger gifts require the donor to file Form 709, but rarely cause tax because of the $15,000,000 basic exclusion.
• Basis of gifts and inheritances. Gifted property generally keeps the donor's basis. Inherited property generally gets a basis equal to fair market value at the date of death. Teach heirs to ask for and keep basis records the day a gift or inheritance arrives.
• Tuition and medical payments. Paid directly to the institution, they are excluded from gift tax without limit.
• 529 plans. How qualified withdrawals work and what records support them.

Stage four: multi-state and residency

Young adults move for school and work. Teach them that domicile, statutory residency, and source income are different tests, that a day log helps, and that leaving a state for school does not always end residency there. The residency and domicile post covers the details. Athletes, performers, and others who work in many states should also read the jock tax post.

Stage five: working with professionals

• What a CPA, EA, and tax attorney each do, and which can represent them before the IRS.
• What Forms 8821 and 2848 authorize.
• How to read an IRS notice and why to respond by the date on it.
• How to send documents securely, and why tax documents should not go by plain email.
• How to recognize IRS impersonation scams. The IRS generally starts contact by mail, not by phone call, text, or social media demand for payment.
• What signing a return means: the taxpayer declares under penalty of perjury that it is true and complete.

Stage six: fiduciary roles

An heir named as a trustee, executor, or agent takes on tax duties. They should know that Form 56 notifies the IRS of a fiduciary relationship, that trusts and estates file Form 1041, that a federal estate tax return is due nine months after death, and that date-of-death valuations set basis for every heir. They do not need to prepare these. They need to know they exist and who to call.

Stage seven: records and security

Teach heirs to protect their own tax identity. The IRS Identity Protection PIN program lets any taxpayer get a six-digit PIN that must be on their return, which blocks fraudulent filings using their Social Security number. Encourage them to set up their own IRS online account to see payments, notices, and transcripts. Teach them to shred or securely store documents with Social Security numbers, and to freeze their credit if they do not need new credit soon.

The scored diagnostic

Use this for each young adult. Score what they can do on their own.

Score each item 0, 1, or 2. Zero means missing. One means partial or out of date. Two means current and documented.

Item	0, 1, or 2
Knows whether they must file and files on time
Can read a W-2, 1099, and K-1 and knows when each arrives
Knows which family entities and trusts they have interests in
Keeps basis records for gifts and inheritances
Knows which states they may owe returns in
Understands the kiddie tax if it still applies
Knows who the family preparer and estate attorney are
Sends documents by a secure method
Can recognize an IRS impersonation scam
Knows any fiduciary role they hold

A total of 16 to 20 means the heir can manage their own tax life. A total of 10 to 15 means a few skills need practice. Below 10, start with stage one.

Illustrative: a first year with a K-1

Illustrative: A 23-year-old receives her first K-1 from a family LLC, showing $8,000 of rental income from properties in two states. She also has a $60,000 salary and $3,000 of dividends from a custodial account that became hers at 21. She plans to file in February using software.

Taught the stages above, she knows to wait for the K-1, that it may require nonresident returns in the two property states, that her dividends are no longer subject to the kiddie tax because she is not a dependent full-time student, and that she should ask the family's preparer, or her own, whether rental losses or depreciation affect her return. She also saves the K-1 and the custodial account's basis records in her own file.

How to teach it

Use the family's real documents, with numbers removed if needed. A redacted K-1, a sample 1099-B, and the young adult's own W-2 teach more than any general course. Have them prepare a draft of their own return each year, even if a preparer files the final version, and compare the two. Have them keep their own folder of tax records with a simple retention rule: returns permanently, supporting records at least three years after filing, and basis records until the asset is sold plus three years. By the time they inherit responsibility for larger assets, the habits are already there.

The order of the stages matters less than the habit underneath them: when a form, a gift, or a new role arrives, ask what it means for this year's return and where the record should be kept. An heir who asks those two questions every time will rarely be surprised by a notice.

Who owns what

The family decides what to teach and when. The heir's own preparer handles their return. Counsel explains entity and trust documents to them when the family chooses.

Next step: pick the stage that matches each young adult in your family and walk through it with them before their next filing season.

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Educational only. This is not tax or legal advice for your situation. Consult your own CPA, EA, or attorney before acting.