Net Worth
$385KTop 42%PeakWorth
$4.2M+$182KNet Worth
$385KTop 42%PeakWorth
$4.2M+$182KFI Age
50y 1m-11moMarriage is the largest financial partnership most people ever form. PeakWorth merges two incomes, two sets of debts, and two spending styles into one projection and recalculates your joint FI Age live — so 'are we on track together?' has a dated answer.
Modeled output
Live joint FI Age
Standard deduction MFJ
$31,500 (2026)
MFJ top-22% bracket ceiling
≤ $206,700 (2026)
Spousal IRA contribution
Allowed for non-earning spouse
There's no single right answer, but the hybrid model — joint household account + individual 'no-questions' accounts — has the highest reported satisfaction. Each partner contributes a percentage of income to joint, keeps a small discretionary buffer, and decisions over a threshold (e.g., $300) are jointly approved.
Almost always. MFJ is more favorable than MFS in nearly every case except: large income disparity with significant student loan IDR plans, large medical deductions for one spouse, or active divorce proceedings. Run both filings and choose the lower-tax option each year.
A prenup isn't pessimism — it's clarity on what each person brings in, how appreciation is treated, and what happens if things change. Especially valuable for second marriages, business owners, or significant pre-marital assets. Discuss with both partners' lawyers, not one.
PeakWorth runs both partners as one plan — combined income, expenses, assets, and debts — through a year-by-year deterministic simulation to age 95, applying married-filing-jointly brackets, the joint standard deduction, and spousal IRA eligibility automatically.
The output is a single joint FI Age (the year your combined portfolio reaches ~25× the household expenses it must cover after Social Security — roughly 20× your total household expenses) and joint PeakWorth (highest projected lifetime net worth), so decisions like a stay-at-home year or paying down one partner's debt show up as a shared, dated tradeoff instead of two separate spreadsheets.
Generic articles can only go so far. PeakWorth runs every scenario against your real income, expenses, and goals — so you see the dollar-and-year impact of every decision before you make it.
Most experts recommend a hybrid: joint account for shared expenses + individual accounts for personal spending. Full separation creates resentment; full merging removes autonomy.
Mostly gone for middle incomes; still exists for two equally high earners. Run the numbers — for many dual-income couples, MFJ is still favorable.
If either partner has significant pre-marital assets, owns a business, has children from a previous marriage, or has major income disparity — strongly consider it.
Usually up: shared fixed costs, dual incomes, and joint tax treatment raise the household savings rate. PeakWorth recalculates a single joint FI Age the moment you combine the two profiles, so you see the exact shift rather than guessing.
Model it both ways. PeakWorth weighs lost salary, lost 401(k) match, and career re-entry against saved childcare and shows the joint FI-Age impact — often the gap is smaller (or larger) than the daycare bill alone suggests.
Calculators, true-cost pages, and audience playbooks across the PeakWorth network.
Calculator
Credit card payoff calculator
Avalanche vs snowball — see the years and dollars you save.
Cost of
Your daily coffee, in retirement years
$5/day. 30 years. The FI Age cost of a daily latte.
Cost of
The true cost of avocado toast
Settle the meme. With math. And your own salary.
Built for
PeakWorth for life transitions
Marriage, kids, job change, inheritance — model every scenario.
Built for
PeakWorth for dual-income households
Joint planning, two careers, one optimal strategy.
Compare
PeakWorth vs Monarch
Tracking the past vs modeling the future.
PeakWorth is the financial decision engine for households — your Personal Financial Strategy OS, a real-time engine that calculates every decision's impact on your future. The Decision Hub, an AI advisor, and a live projection that show you exactly how each move shapes your wealth and your FI Age.
