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Which bills come out of which paycheck?

You're paid every two weeks. Your bills are due every month. Those two clocks never sync — your paydays drift through the calendar, and the rent that was comfortably covered in March lands two days before payday in April. Map it once below, or let Skycopia map it from your real bank data.

Monthly bills

Runs entirely in your browser — nothing you enter is sent anywhere or saved.

Enter a recent payday above and we'll map every bill to the paycheck that covers it.

Why biweekly pay and monthly bills never line up

A month is 28–31 days; your pay cycle is exactly 14. That mismatch means your paydays land on different calendar days every single month — the 5th and the 19th this month, the 2nd, 16th, and 30th a few months later (see your 3-paycheck months). A fixed "pay rent from the first check" rule quietly stops working the month your first check arrives on the 12th and rent was due on the 1st.

The fix isn't a stricter monthly budget — it's assigning every bill to a specific check, and re-checking the assignment as your paydays drift. That's what the mapper above does from a single recent payday, and what the paycheck budget calculator extends with leftover-per-check math.

The part no mapper can type in for you: the bills you forgot exist. Subscriptions bill on whatever day you signed up, and the forgotten ones never make it onto the list — but they still come out of a paycheck.

Skycopia already knows which bills hit before your next payday.

Connect your bank once (read-only, via Plaid) and Skycopia detects every recurring bill and its real billing date from your transaction history — no typing, no maintenance, and nothing forgotten. Then it keeps watch: renewal reminders before charges land, and alerts when a "cancelled" service bills again.

The founder's own audit found 62 recurring charges across 6,027 transactions and flagged $19,207/yr — real numbers, July 2026.

Connect your bank and see your bills — free

FAQ

How do I figure out which bills come out of which paycheck?

List every monthly bill with its due date, then assign each to the last paycheck that arrives before it's due. On a biweekly schedule your paydays drift through the month (the 5th and 19th one month, the 3rd, 17th, and 31st the next), so the assignment changes month to month — that's what the mapper on this page computes from one recent payday.

Why do my bills and paychecks never line up?

Because they run on different clocks: bills repeat monthly (every 28–31 days) while biweekly pay repeats every 14 days. 26 checks against 12 months means your paydays land on different calendar days every month, and roughly twice a year a month contains three checks. A bill due on the 1st might be comfortably covered one month and land two days before payday the next.

What do I do about a bill due before my first paycheck of the month?

Set that money aside from your final paycheck of the previous month — it's the single most common cause of early-month overdrafts on biweekly pay. The mapper flags these bills separately so you can see exactly how much your last check of each month needs to carry forward.

Can I just move my bill due dates instead?

Often, yes — most utilities, card issuers, and lenders let you change your due date once or twice a year. Cluster bills a few days after each payday and the mapping gets trivial. The catch is subscriptions: they bill on whatever day you signed up, they're rarely movable, and the forgotten ones don't appear on your list at all — which is what Skycopia's bank-level detection is for.

Does Skycopia do this automatically?

Yes — that's the product. Connect your bank (read-only, via Plaid) and Skycopia detects your recurring bills and their real billing dates from your transaction history, so you can see which charges hit before your next payday without typing anything in. It's free to start.

Stop guessing which check the rent comes out of.

Skycopia maps your real bills to your real paydays from your bank data — and catches the recurring charges you forgot you were paying.

Connect your bank — free →