Most retirement calculators ask you one question about income: what do you make right now?

That is it. Static number. Done.

The problem is that number is probably the least useful version of your salary for retirement planning. What actually matters is what you will be making at 45, 52, 58 — and how those raises compound into your 401k contributions, your IRA limits, and ultimately your final balance.

If you are 32 making $85,000 and you get a 3% raise every year, you will be making around $155,000 by the time you hit 55. That is not a small difference. A 401k contribution of 10% of salary looks very different on $85k versus $155k — and that gap compounds for decades.

Why Your Current Salary Is the Wrong Starting Point

Retirement calculators typically work like this: enter your salary, enter your contribution percentage, done. The math assumes you will contribute the same dollar amount every year until you retire.

That is not how careers work.

Most people get raises. Some get promoted. Some switch jobs for a 15% bump. Some hit a senior level in their 40s where compensation jumps significantly. A retirement plan that ignores all of this is planning for a career that does not exist.

Here is a simple example. Say you are 35, making $90,000, contributing 10% to your 401k with a 3% employer match. That is $11,700 going into your 401k this year.

Now assume you get 3% raises annually. By age 50, you are making $140,000. Your 401k contribution at the same 10% is now $14,000 — plus the match. By 60, you are at $188,000, contributing $18,800.

A calculator that uses $90,000 as a fixed salary is leaving decades of compounding growth off the table. The difference in projected retirement balance can easily be $400,000 or more.

The Promotion Problem

Raises are one thing. Promotions are another.

A 3% annual raise is steady and predictable. A promotion is a step change — maybe you go from $95,000 to $120,000 in one year. That kind of jump changes your contribution math immediately, and it changes what you can afford to save going forward. If the jump comes from a job change rather than an internal promotion, see the guide on how to model a job change in your retirement plan — the salary reset interacts with the transition in ways worth modeling explicitly.

Most calculators have no way to model this. You can enter your current salary, but there is no field for "at age 40 I expect to earn significantly more."

This matters especially for people earlier in their careers. A 28-year-old software engineer, a nurse moving into management, a teacher getting a department head role — all of these are people whose retirement trajectory looks completely different depending on whether their salary progression is modeled or ignored.

How Bonuses Fit In

Annual bonuses add another layer that most calculators ignore entirely. The full mechanics of modeling bonus income in a retirement projection are covered in how to model a bonus in your retirement plan.

If you are in a role with a 10% bonus target, that is a meaningful chunk of compensation — and depending on your plan, it may be eligible for 401k contributions. Some people contribute a percentage of base salary only. Others contribute the same percentage of total compensation including bonus.

If your bonus grows as you get promoted — say from 10% to 20% of a larger base salary — the compounding effect is significant. A $120,000 base with a 20% bonus target means $24,000 in bonus. If you contribute 10% of that, it is another $2,400 a year into your 401k on top of your base contributions.

Over 20 years, that adds up.

IRS Limits and What They Mean for High Earners

Here is something that catches people off guard: as your salary grows, you may hit the IRS contribution limits for your 401k earlier in the year.

In 2026, the 401k limit is $24,500 (plus $8,000 catch-up if you are 50 or older). If you are contributing 15% of salary and your salary reaches $163,000, you hit the limit before the year ends.

This is a good problem to have, but it means your percentage-based contribution model breaks down at a certain salary level. A good retirement model accounts for this — once your projected salary times your contribution rate exceeds the IRS limit, contributions should cap at the limit rather than keep adding a fictional percentage.

The IRS also adjusts contribution limits for inflation each year. The 2026 limit of $24,500 will likely be higher by 2030, 2035, and beyond. A calculator that bakes in current limits for 30 years of projections is understating how much you can actually contribute in later years.

What This Looks Like in Practice

Take a 35-year-old making $85,000 with a 401k balance of $50,000. They contribute 10% with a 5% employer match, planning to retire at 65.

Static salary model: contributions of $8,500 per year from now until retirement. Projected balance at 7% real return: roughly $1.1M.

Dynamic salary model (3% raises, promotion to $120,000 at age 42): contributions grow from $8,500 to over $15,000 by retirement. Projected balance at the same return rate: closer to $1.6M.

That $500,000 difference comes entirely from modeling salary growth. Same person, same contribution rate, same investment return — just a more accurate picture of how their career actually works.

The Real vs Nominal Problem

When you model salary raises, you have to decide: are you modeling real growth or nominal growth?

Nominal growth is the raw number. If you get a 3% raise in a year with 3% inflation, your purchasing power has not actually changed — you are just keeping up with rising prices.

Real salary growth is what happens when your raises outpace inflation. A 5% raise in a 3% inflation environment means your actual purchasing power grew by about 2%. For retirement planning, this distinction matters because your retirement expenses will also be inflation-adjusted.

If your real salary grows through promotions and career advancement, your retirement trajectory improves meaningfully. More salary means more savings capacity, more 401k contributions, and a higher lifestyle to maintain in retirement.

How to Model This Properly

The right approach is to project your salary year by year, apply your contribution percentages to each year, and cap at the relevant IRS limits. Almost no mainstream calculator does this.

What you actually need:

When you run the numbers this way, the results are usually more optimistic than the static salary model — because your contributions grow with your salary, and that growth compounds over time.

The Takeaway

Your retirement number is not determined by what you earn today. It is determined by what you will earn over the next 20 or 30 years, how much of that you save, and how long it compounds.

If you are using a calculator that treats your salary as fixed, you are probably undershooting your actual retirement trajectory — which means you might be making decisions based on a projection that does not reflect your real career.

Model the raises. Model the promotions. Model the bonuses. The math will be more accurate, and you will have a much clearer picture of where you actually stand.