Whether you should marry someone with significant debt depends much less on the dollar amount than on three other factors: their transparency about the debt, their trajectory toward paying it off, and how compatible your financial values are. People marry partners with $80,000 in student loans and stay happily married for decades. People marry partners with $5,000 in credit cards and divorce over money within five years. The size of the debt is less predictive than the relationship to the debt.
What you become legally responsible for.
Premarital debt. In all states, debt incurred by one spouse before marriage stays that spouse's separate debt. Your name does not get attached to it by virtue of marriage. Their student loans from college, their credit cards from before you met, their car loan signed before the wedding remain solely theirs unless you take affirmative action to assume the debt.
Marital debt in common-law states. Most states (41 plus DC) are common-law states. Debt incurred during marriage by one spouse alone (in their name) remains that spouse's debt. You are not automatically liable. The exception: necessities (food, shelter, basic medical care) under the doctrine of necessaries in some states.
Marital debt in community property states. Nine states (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, Wisconsin) are community property states. Most debt incurred during marriage by either spouse is treated as a community obligation, even if only one spouse signed. Both spouses' assets and income can typically be reached by creditors. Premarital debt is still separate, but post-marriage borrowing is shared even without a co-signature.
Joint accounts and co-signing. If you co-sign a loan, jointly hold a credit card, or take a joint mortgage, you are individually liable for the full amount, not just half. Co-signing is the fastest way to become personally responsible for a partner's debt. This is true regardless of state.
Tax debt. Filing a joint tax return makes both spouses jointly and severally liable for the entire tax bill, including any errors or unpaid amounts. The Innocent Spouse Rule (IRC ยง 6015) provides relief in narrow circumstances. Filing married-filing-separately keeps tax liability separate but typically increases combined tax owed.
Bankruptcy. If your spouse files individual Chapter 7 or 13, your separate property and individual debts are not directly affected, but the household balance sheet does change. In community property states, your share of community property may be considered.
What actually predicts whether the marriage works.
1. Transparency. The single biggest red flag is finding out about debt you did not know existed. Studies on financial infidelity (NerdWallet 2024, Bankrate 2023) consistently find that hidden debt, hidden purchases, and hidden accounts are among the strongest predictors of marital unhappiness and divorce. A partner who voluntarily discloses their full financial picture (every account, balance, APR, payment history) before the wedding has already passed the most important test.
2. The trajectory. $80,000 in debt with a written 5-year payoff plan and steady monthly progress is a fundamentally different situation from $20,000 in debt with no plan and ongoing additions. Look at how the partner is actually relating to the debt: are they paying it down, are they making minimums and adding to it, or are they avoiding it entirely. Behavior over the prior 12 to 24 months is the best predictor of behavior in the next 12 to 24.
3. Shared financial values. Couples who agree on what money is for (security, experiences, status, freedom) tend to handle debt and saving compatibly even with significant differences in starting position. Couples with mismatched values argue about money even when both are otherwise solvent. The conversation that matters is not "how much do you have" but "what do we want money to do for us."
4. Income capacity. A high earner with $200,000 in student loans on a 10-year payoff plan is in a different position than a low earner with $40,000 in credit card debt. Income relative to debt and expected payoff timeline matters more than the absolute number.
5. Type of debt. Federal student loans on income-driven repayment with PSLF in sight are very different from $40,000 in credit cards from prior overspending. Mortgage debt on an appreciating home is different from auto loans on a luxury car. The category of debt usually tells you something about how the partner makes financial decisions.
The conversation to have before the wedding. A 90-minute structured conversation, with statements and credit reports on the table, that covers:
Every account each of you holds, with balances and APRs.
Each person's credit score and report (pull from AnnualCreditReport.com).
Each person's income, including any irregular sources.
Each person's monthly expense patterns from the past 6 months.
Specific goals: home purchase timeline, retirement target, kids, career direction, parental support obligations.
Each person's financial values and history (how money was handled growing up, biggest financial regret, biggest financial pride).
How money will be managed in the marriage: joint accounts, separate accounts, hybrid model, who pays what bills, transaction-disclosure threshold.
Insurance coverage (life, disability, health) for each person.
Estate planning (do you both have wills, beneficiaries, healthcare directives).
Prenuptial agreements. A prenup that addresses premarital debt explicitly (your debt stays yours, my debt stays mine, even in community property states) is appropriate for some couples. Prenups are most useful when one or both partners enter the marriage with significant debt or significant separate assets, and when there is a meaningful asymmetry between the parties. They are less common for couples in similar financial positions. A family law attorney should draft any prenup; DIY templates often fail in court.
What a healthy debt-payoff partnership looks like during marriage. The non-debtor spouse does not become responsible for the debtor spouse's debt, but typically supports the household's overall plan. Many couples treat debt payoff as a shared goal even when only one name is on the debt: keeping household expenses lean, redirecting joint surplus to the debt, and celebrating milestones together. The key is that both partners agree on the strategy before committing to it.
What unhealthy debt-payoff partnerships look like. One spouse is paying off the debt while the other continues to spend at a level the household cannot sustain. The debt holder is hiding new charges or new accounts. The non-debt holder is tracking and resenting the situation rather than participating in solving it. Both partners are silently building cases against each other rather than communicating about the financial reality. These patterns are usually the actual cause of divorce, not the debt itself.
If you are evaluating someone you love and they have significant debt. Ask yourself:
Have they shown me everything, or am I working from partial information?
Are they making consistent monthly progress, or has the balance been stable or growing?
Do they have a written plan with a target payoff date, or is it vague?
Do they take ownership of the situation, or do they blame circumstances?
Have we discussed how money will be managed in our marriage and reached agreement?
What does their financial behavior in other domains (saving, spending, planning) tell me?
Transparency, trajectory, and shared values predict the marriage's outcome more than the dollar amount of debt. A structured conversation before the wedding (credit reports on the table, agreement on how money will work) eliminates most of the future fights.