Raises vanish. Not through any single decision — through fifty small ones, each reasonable, that together absorb the new money into the old life within two or three paychecks. The fix is not discipline; it's timing. A raise that's assigned before the first bigger paycheck lands is kept. One assigned "once things settle" never is.
1Find the real monthly number
A $12,000 raise is not $1,000 a month. After federal and state tax at your marginal rate and FICA, it's more like $650–$750 in take-home — and if the raise moves you over a 401(k) percentage, a bit less. Run the old and new salary through the after-tax income calculator and subtract. That difference is the number you're assigning. Everything else in this guide is about that number, not the headline.
2Assign it before the first bigger paycheck
The order that works for most people:
- If the emergency fund isn't at target, half the raise goes there until it is.
- If the 401(k) isn't at the match, fix that first — it's the only place the raise is doubled.
- Then the goal that's furthest behind its date.
- Then a fixed slice — 20–25% of the raise — to spend, permanently. This is what makes the raise feel like a raise.
The 401(k) piece has a bonus: raising the contribution percentage in the same pay period as the raise means you never see the old take-home go down. That's the one time in a year it's painless.
3Re-date the goals, and notice the year
$500 a month more toward the house fund moves the date by months; $500 more into retirement, compounding for decades, is a different order of magnitude. The compound interest calculator is worth thirty seconds here: at 7%, $500 a month for 30 years is about $610,000. Assigning a raise well is one of the few decisions that changes the shape of the whole plan.
4Watch the fixed costs for six months
Lifestyle creep isn't dinners; it's the recurring things — the nicer apartment at the next lease, the car upgrade, the subscriptions that each cost less than the raise. Set a simple rule: for six months, no new recurring cost. After that, if the assigned pieces have held, a deliberate upgrade is fine. It's the accidental ones that eat the raise.
The plan, in Allocate
You'd say: "I just got a $12,000 raise, starts next paycheck." Allo-Bot proposes:
- Take-home change: about +$720 a month (32% federal marginal, 5% state, FICA).
- 401(k): contribution rate 6% → 8% in the same pay period; cost $200 of the $720 before tax, and the match rises with it.
- House fund: $900 → $1,200 a month; date moves from October to June.
- $180 a month to spend, unassigned, permanent.
- Rule for six months: no new recurring costs; the brief flags any new subscription or fixed line that appears.
If you'd rather the raise went to the trip instead of the house, say so — the plan re-proposes and stages the change for your yes.
Frequently asked questions
How much of a raise should I save?
Assign all of it, then decide how much of the assignment is spending. A 75/25 split — three-quarters to goals and retirement, a quarter to enjoy — keeps the raise and still makes it felt. Do it before the first bigger paycheck.
Why is my paycheck only a little bigger after a big raise?
Tax and FICA take their share at your marginal rate — often 30–40% combined — and a higher 401(k) contribution takes more. A $12,000 raise typically shows up as $650–$750 a month in take-home.
Should I increase my 401(k) contribution with a raise?
Yes, in the same pay period: you never see the old take-home fall, so it's the least painful time to raise it. At minimum reach the employer match; beyond that, a point or two per raise builds to the maximum over a few years.
This guide is educational and uses invented numbers — not investment, tax or legal advice. Your income, taxes and goals are your own; talk to a qualified professional about your situation.