Chapter 21: Family money: partners, kids, parents

Money inside a family is never just math. It is also power, trust, and labor. A couple can earn $200,000 a year and still fight every month, while another couple thrives on half that, because the second couple built a system both people trust. This chapter is about those systems: how partners share money, how to support parents without sinking your own plan, what kids actually cost, how to pay for college without raiding retirement, and what to do when money flows to you through an inheritance.

Partners: three systems, one requirement

There are three common ways couples organize money:

The secret is that any of the three works. What breaks couples is not the structure but failing three tests:

1. Both partners can see everything. Not approve everything. See everything: balances, debts, and the password manager from Chapter 10.
2. Each partner can spend something without permission. Even $100 a month of no-questions money prevents one person from becoming the household's permission desk.
3. Both partners know the incapacity plan. If one of you is in a hospital bed, can the other pay the mortgage tomorrow? That's the continuity file from Chapter 10.

Two habits make any system stick. First, a money meeting: 30 minutes a month, calendar invite, three questions: what came in, what went out, what's coming. It turns surprises into agenda items. Second, never let one partner become the permanent gatekeeper. The partner who "isn't the money person" still votes, still sees the numbers, and still takes a turn paying the bills once a year. Gatekeeping breeds resentment in one direction and helplessness in the other.

One more thing that belongs on the books: unpaid care work is economically real. If one partner steps back from paid work to raise kids or care for a parent, the household is consuming that partner's future earnings and retirement savings. Name it, and offset it, for example by funding a spousal IRA (an IRA funded for a non-earning spouse based on the working partner's income, up to the normal $7,500 limit in 2026).

And a word on the document people whisper about: a prenup (a written agreement, made before marriage, about how money is handled if the marriage ends). It applies the same logic as the rest of this guide, deciding the hard thing calmly, in writing, before the storm, and it is not a bet against the marriage. Couples with businesses, big asset gaps, or kids from prior relationships get the most value from one.

Supporting parents and relatives

Family obligations are real obligations. Roughly half the readers of this chapter will, at some point, send money up or sideways through the family: to a parent, a sibling, a cousin. The goal is not to stop caring for family but to care sustainably. Four distinctions do most of the work:

• Temporary vs. recurring. A one-time $2,000 car repair is a different commitment than $500 every month forever. Name which one you're agreeing to, out loud.
• Gift vs. loan vs. caregiving payment. A gift expects nothing back, and in 2026 you can give any person up to $19,000 a year with no gift-tax paperwork at all. A loan to family should be written down: amount, schedule, what happens if it's not repaid. (Unwritten family loans are usually gifts wearing a costume, and the costume causes the fights.) A caregiving payment compensates a relative for real work, ideally under a simple written care agreement.
• A cap and a review date. "Whatever Mom needs" is not a plan; it's an open tab against your own retirement. A number per year, reviewed every January, is a plan.
• Never from retirement funds. Money pulled from a 401(k) or IRA early usually triggers taxes plus a 10% penalty, and it can't be put back. Support comes from current surplus or a dedicated account, not from your 70-year-old self.

If you start managing a parent's money directly, paying their bills or holding a power of attorney (the document from Chapter 10 that lets you act on their behalf), the rules tighten: keep their money completely separate from yours, document every transaction, and spend only in their interest. The CFPB publishes free plain-English guides for exactly this role; they're linked in the sources below.

Kids: the cost and the curriculum

Children change the plan in two ways: what they cost, and what they learn from you.

The cost shows up early and concentrated. If childcare runs $1,800 a month, that's $21,600 a year of after-tax money. For many families it is briefly the biggest line on the budget, bigger than the mortgage. Plan for it like the temporary siege it is: pause extra debt prepayment if needed, protect the employer match (Chapter 4's order still holds), and remember the cost falls off a cliff at kindergarten.

The curriculum is cheaper. Kids learn money by system, not lecture. A simple one: allowance split three ways (spend, save, give), with the save jar earning visible "interest" from you. A teenager with a first paycheck can open a Roth IRA with even $200 of earned income. You are not teaching numbers; you are teaching that money responds to structure.

College without unfunding retirement

The main tool is the 529 plan: a state-sponsored investment account where money grows untaxed and comes out untaxed for qualified education costs. Many states add a state-tax deduction for contributions. Anyone can fund one: parents, grandparents, Renee for her nephew.

The old fear was overfunding: "what if my kid gets a scholarship and the money is trapped?" The SECURE 2.0 law built an escape hatch: leftover 529 money can roll into the beneficiary's Roth IRA. The rules are specific:

But sequence matters more than vehicle:

When money flows to you: inheritance

Sooner or later, most families have a moment when money moves down a generation. The playbook:

1. Secure documents first, decide later. Death certificates, account statements, the will, beneficiary forms.
2. No big moves for six months. Grief makes expensive decisions. Park cash somewhere boring from Chapter 3. Anyone pushing urgency is selling something.
3. Know about the step-up. Inherited taxable investments get a step-up in basis: their cost basis resets to the value at death, so decades of gains are never taxed. Selling inherited stock soon after often costs little or no tax, so don't hold a bad portfolio out of loyalty.
4. Inherited retirement accounts have a clock. Most non-spouse heirs must empty an inherited IRA within 10 years, paying income tax on traditional dollars as they come out. Spreading withdrawals across the 10 years usually beats one giant taxable lump in year ten. Details live in IRS Publication 590-B.

Key takeaways

• Joint, separate, or hybrid all work, provided both partners can see everything, each can spend something freely, and either could run the household alone.
• Support for parents and relatives is a real obligation: give it a cap, a review date, and its own account, never your retirement funds. Renee's $9,000 boundary is the model.
• Fund retirement before tuition; kids can borrow for college, you can't borrow for old age.
• A 529 is hard to overfund now: SECURE 2.0 lets up to $35,000 roll to the beneficiary's Roth IRA, provided the account is 15+ years old, the money has 5-year seasoning, rollovers fit inside the annual Roth limit, and the beneficiary has earned income.
• After an inheritance: secure documents, make no big moves for six months, remember the basis step-up and the 10-year inherited-IRA clock.

Sources: Fidelity: 529 rollover to Roth · IRS: Publication 590-A (IRA contributions) · IRS: Publication 590-B (IRA distributions) · CFPB: Managing someone else's money · IRS: 2026 inflation adjustments