Semi-monthly paycheck budget

Paid twice a month on fixed dates? See which paycheck covers each bill, what each one has left after bills, and which bill to move if a paycheck comes up short.

Free, no sign-up. Runs in your browser; nothing you enter is sent anywhere. Updated October 13, 2026.

First payday

Take-home pay on the 15th

Second payday

Take-home pay on the last day

Monthly bills

Name of bill 1
Due day for Rent
Amount for Rent
Name of bill 2
Due day for Car insurance
Amount for Car insurance
Name of bill 3
Due day for Phone
Amount for Phone
Name of bill 4
Due day for Electric
Amount for Electric
Name of bill 5
Due day for Car payment
Amount for Car payment
Name of bill 6
Due day for Internet
Amount for Internet
Name of bill 7
Due day for Credit card
Amount for Credit card

Take-home a month

$4,200.00

Bills a month

$2,345.00

Left a month

$1,855.00

Take-home a year (24 checks)

$50,400.00

15th paycheck

Bills due from the 15th to the 30th

Electric · 18th$120.00
Car payment · 20th$350.00
Internet · 25th$70.00
Credit card · 28th$200.00

Take-home: $2,100.00
Bills: −$740.00
Left over: $1,360.00

Last-day paycheck

Bills due on the last day of the month, or from the 1st to the 14th of the next month

Rent · 1st$1,400.00
Car insurance · 8th$140.00
Phone · 12th$65.00

Take-home: $2,100.00
Bills: −$1,605.00
Left over: $495.00

Each bill is paid from the most recent paycheck on or before its due date. Bills due before the 15th come out of the previous month's last-day paycheck.

How bills are matched to paychecks

Each bill is paid from the most recent paycheck on or before its due date. With paydays on the 1st and 15th, the 1st paycheck covers bills due from the 1st to the 14th and the 15th paycheck covers the 15th to the end of the month.

When your first payday is later than the 1st, bills due before it roll back to the previous month. Paid on the 15th and the last day, a bill due on the 5th is paid from the last-day paycheck you got at the end of the month before. That is the paycheck that has to stretch furthest, because rent is often due on the 1st.

For each paycheck the calculator adds up its bills and subtracts them from that paycheck's take-home pay. If the result is negative, it looks for the smallest bill that, moved to the other paycheck, fixes the shortfall without overdrawing that one, and tells you which due dates would move it there.

Worked example

The calculator starts with paydays on the 15th and the last day of the month, $2,100.00 take-home each, and 7 bills totaling $2,345.00.

Last-day paycheck pays the bills due from the last day of the month through the 14th: rent (1st, $1,400.00), car insurance (8th, $140.00), phone (12th, $65.00). That is $1,605.00, leaving $495.00.
15th paycheck pays the bills due from the 15th through the 30th: electric (18th, $120.00), car payment (20th, $350.00), internet (25th, $70.00), credit card (28th, $200.00). That is $740.00, leaving $1,360.00.

Neither paycheck is short, but the split is lopsided: rent makes the last-day paycheck carry most of the bills. Knowing that, you can plan to spend less of that paycheck, or ask to move a bill like the phone to a date on or after the 15th.

Semi-monthly vs biweekly pay

Semi-monthly pay comes twice a month on fixed dates: 2 × 12 = 24 paychecks a year. Biweekly pay comes every two weeks: 52 ÷ 2 = 26 paychecks a year, which means two months a year have three paydays.

On a $50,000 salary before taxes, each semi-monthly paycheck is $2,083.33 and each biweekly one is $1,923.08. Semi-monthly checks are larger and line up with monthly bills; biweekly checks land on a different date each month, so the matching above changes from month to month.

One more thing to check: when a payday falls on a weekend or holiday, many employers pay on the business day before. Your employer's pay schedule will say.

Frequently asked questions

What does semi-monthly pay mean?

You are paid twice a month on the same two dates, such as the 1st and the 15th, or the 15th and the last day of the month. That makes 24 paychecks a year.

Is semi-monthly the same as biweekly?

No. Biweekly means every two weeks, which is 26 paychecks a year because a year has 52 weeks. Semi-monthly is 24 paychecks on fixed dates. On the same salary, each semi-monthly paycheck is larger, but biweekly pay gives you two months a year with three paychecks.

Which paycheck should pay rent?

The most recent paycheck on or before the day rent is due. If rent is due on the 1st and you are paid on the 15th and the last day, rent comes out of the last-day paycheck from the month before, so that money has to be kept aside rather than spent.

What if one paycheck can't cover its bills?

Move a bill to the other paycheck. Many lenders and utilities let you change a due date, often from your online account. If no single bill fits, keep part of the other paycheck in checking to cover the gap.

How are bills due on the 29th, 30th, or 31st handled?

Due days are compared as if the month had 31 days, so a bill due on the 30th is assigned to the paycheck before a last-day payday. That is correct in 31-day months and the safe choice in shorter ones, when the last-day paycheck may arrive on the same day the bill is due.

Cite this tool

Money Tracker, “Semi-monthly paycheck budget”, https://www.trackmoney.ai/tools/semi-monthly-paycheck-budget