NYC couple (35): can you Coast FIRE by 45 without leaving the city?

A realistic Coast FIRE scenario pack for a high-income NYC renter couple who want to ease off by 45 without pretending rent is cheap.

In New York, "high income" doesn’t automatically mean "easy mode". If you’re a dual-income couple paying market rent, maxing retirement accounts, and still feeling the squeeze, Coast FIRE is appealing for one reason: it gives you permission to stop sprinting.

This scenario pack starts with a 35-year-old NYC couple in January 2026 with $250,000 already invested. It compares three paths to a Coast FIRE checkpoint around age 45: keep saving aggressively for longer, ease off once you hit Coast FIRE, and a family-aware branch where a child forces the savings throttle down.

What the numbers show

The key idea behind Coast FIRE is simple: if you can build enough invested capital by 45, you may not need to keep pushing the savings rate as hard for the next 15-20 years. Your job still pays the bills; your portfolio does the compounding.

All variants use the same retirement target line items (in today’s dollars): $8,500/month of retirement spending and a $6,200/month Social Security planning anchor (claimed at retirement). The scenarios differ in how hard you invest before and after age 45, and whether family costs reduce your investable cash flow.

If you’re new to the simulator’s metrics, start with Reading your results. For editing the timeline (step-ups, one-offs, childcare years), see Working with recurring items and one-offs.

What this comparison evaluates

This pack is built to answer three practical questions:

1. If you push hard until 45, how much does that buy you in terms of a cushion-based "safe" retirement budget?
2. If you coast at 45 (lower contributions but keep working), how sensitive is the plan to a bad return decade?
3. If you add one child and need more space (and pay more rent), do you still have a credible Coast FIRE moment - or does it move out of reach?

How the costs are planned

This is not a full NYC household budget. The monthly investing lines represent how much you invest for retirement (across accounts) after you’ve paid rent, taxes, and normal living costs.

Then the scenario adds a few realistic "hits" that often show up in high-cost-city life:

• A move with broker fees and a furnishing refresh.
• A job shock / gap.
• A healthcare out-of-pocket shock.
• A large late-life care and accessibility reserve.

In the family-aware branch, childcare and a rent step-up are modeled as additional monthly costs that reduce what you can invest.

The strategy

Stay aggressive: buy insurance against the unknown

This path keeps very high investing through the late 40s, then steps down. It is the "sleep at night" option: it tries to bank extra compounding while two incomes are still strong and before family or burnout risk has its say.

Coast at 45: replace intensity with consistency

This path invests aggressively until 45, then drops to a lower ongoing contribution. The whole point is psychological and practical: you stop optimizing every decision around the savings rate, but you keep the plan alive with a modest baseline so the portfolio keeps growing.

1 child later: keep the plan, accept the squeeze

This branch uses the same Coast-at-45 contribution shape, but it adds a child around age 38-39. Childcare years and a rent step-up reduce investable cash flow during the exact window when you would otherwise be building the Coast FIRE buffer.

Personalize it

When you open the preset, make three edits first:

1. Replace the Social Security anchor with your own couple-level estimate.
2. Move the retirement age (and the Coast checkpoint) to match what you actually mean by "coast".
3. Adjust the investing amounts to your realistic after-tax cash-flow saving (especially if you max 401(k)s but invest less in taxable).

After that, stress-test the two biggest NYC realities:

• What happens if rent jumps $500-$1,500/month when you need more space?
• What happens if one income pauses for 6-12 months?

US / NYC notes

• Account limits shape the path. In 2026, maxing both employee 401(k)s is $49,000/year before any match, so large monthly investing amounts imply taxable investing as well.
• Roth IRA access is income-sensitive. For many high-income couples, direct Roth contributions phase out; treat Roth access as a plan-specific detail, not a default.
• Health insurance is a hidden Coast FIRE constraint. If coasting eventually means leaving employer coverage, your real "retire early" cost can look very different.

This scenario is an educational model, not personal financial advice. It simplifies taxes, benefits, and investment implementation so you can compare ranges and trade-offs.