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All calculators and practical guides in one place.
Use this index to jump from a broad money or deadline question into the exact calculator, checklist or planning guide.
United States
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January estimated tax payment: check the tax year before paying
Separate the January payment date from the tax year it covers. Use a payment-record checklist to reconcile the period, confirmation and bank withdrawal.
Open guideW-4 paycheck checklist: count the paychecks that will actually change
Check which pay date first uses your new W-4. Separate a four-paycheck cash forecast from a five-paycheck calendar count, then reconcile the actual paystub.
Open guide2026 federal holidays: dates, closures and cash planning
Check the full 2026 federal holiday list and separate an official holiday from employer closures and confirmed cash availability. Includes a Thanksgiving worksheet.
Open guideMoving payment checklist: accepted method, deposit credit and delivery cash
Check the payment method your mover accepts, confirm any deposit credit and separate cleared funds from pending refunds before delivery day.
Open guideFirst apartment monthly costs: annual bills and cash due dates
Add irregular bills to your apartment budget without counting savings twice. Compare a monthly set-aside with the cash actually needed before a bill falls due.
Open guideFirst apartment cash checklist: costs due before payday
Check whether move-in bills fall due before your next paycheck. Keep promised income separate from available cash, and use the move-in calculator with one cutoff date.
Open guideThe hub is refreshed when new tools or long-tail checklists are published.
Practical pages
Hourly to Salary Calculator
Convert hourly wage into weekly, monthly, and annual gross salary estimates for US planning.
Open guideRent Affordability Calculator
Estimate a practical US rent range from gross monthly income, debt, savings goals, utilities, renter insurance, and leftover cash.
Open guideUS Business Day Calculator
Count US business days between two dates and optionally exclude 2026 federal holidays.
Open guide2026 federal holidays: dates, closures and cash planning
Check the full 2026 federal holiday list and separate an official holiday from employer closures and confirmed cash availability. Includes a Thanksgiving worksheet.
Open guideMonthly budget review: compare planned and actual spending
Close your first full month with a planned-versus-actual budget. Find missing bills, explain the difference and carry a realistic amount into next month.
Open guideRent budget by income: test a lower-pay month before signing
Compare rent with take-home pay, full housing costs and your other bills. Use a lower-pay-month example to see when an apparently affordable lease leaves a gap.
Open guideFirst apartment cash checklist: costs due before payday
Check whether move-in bills fall due before your next paycheck. Keep promised income separate from available cash, and use the move-in calculator with one cutoff date.
Open guideBiweekly paycheck budget: check the lowest balance before payday
Use a dated paycheck budget to spot a cash shortfall before rent is due. Compare monthly averages, two-paycheck cash and the opening buffer you actually have.
Open guideMoving payment checklist: accepted method, deposit credit and delivery cash
Check the payment method your mover accepts, confirm any deposit credit and separate cleared funds from pending refunds before delivery day.
Open guideFirst apartment monthly costs: annual bills and cash due dates
Add irregular bills to your apartment budget without counting savings twice. Compare a monthly set-aside with the cash actually needed before a bill falls due.
Open guide2026 federal holiday planning notes
A practical 2026 US federal holiday planning page for payroll timing, bank closures, due-date checks and business-day assumptions.
Open guideIRS and federal holiday deadline check (2026)
Practical 2026 checklist to verify IRS and federal-holiday timing assumptions before filing, payroll, or vendor deadlines.
Open guideW-4 paycheck checklist: count the paychecks that will actually change
Check which pay date first uses your new W-4. Separate a four-paycheck cash forecast from a five-paycheck calendar count, then reconcile the actual paystub.
Open guideJanuary estimated tax payment: check the tax year before paying
Separate the January payment date from the tax year it covers. Use a payment-record checklist to reconcile the period, confirmation and bank withdrawal.
Open guideIRS underpayment penalty: compare payment dates and cash still needed
Review an estimated-tax penalty by period and payment date. Separate a late payment, an unposted payment and a cash reserve before responding to the IRS notice.
Open guideIRS payment plan eligibility checklist
Practical checklist to evaluate IRS payment plan eligibility, required filing status, and records to prepare before requesting an installment agreement.
Open guideIRS CP14 notice response checklist
Practical IRS CP14 notice checklist: confirm the balance, payment deadline, records, dispute path and next action before responding.
Open guideIRS CP2000 response checklist
Practical IRS CP2000 response checklist: compare the notice with your return, decide whether you agree, gather records and respond by the due date.
Open guideCP2000 payment options checklist
Practical CP2000 payment options checklist: compare pay-now, wait-for-bill and payment-plan paths before you respond to the IRS.
Open guideCP2000 response document checklist
Practical CP2000 response document checklist: organize notice pages, mismatch proof, response form and payment records before replying to the IRS.
Open guideCP2000 vs tax return comparison checklist
Practical CP2000 comparison checklist: match the notice against your filed return, third-party forms and disputed lines before you respond.
Open guideCP2000 document upload, fax or mail checklist
Checklist for choosing IRS Document Upload Tool, fax or mail when responding to a CP2000 notice, with proof and follow-up controls.
Open guideCP2000 after deadline next steps checklist
Checklist for organizing a late CP2000 response, IRS notice proof, payment status and audit reconsideration notes before calling or sending documents.
Open guideCP2000 interest and penalty follow-up checklist
Checklist for tracking CP2000 interest, penalties, payment status, proof and next IRS follow-up after a proposed adjustment.
Open guideCP2000 payment plan or dispute checklist
Checklist for separating a CP2000 disagreement, payment option, proof packet and IRS follow-up before mixing dispute and collection steps.
Open guideCP3219A Tax Court deadline checklist
Checklist for handling an IRS CP3219A notice: 90-day petition deadline, Form 5564, evidence packet, payment risk and proof of response.
Open guideCP3219A Form 5564 agree or disagree checklist
Checklist for using Form 5564 with an IRS CP3219A notice: agree, disagree, partial agreement, payment proof, petition deadline and records.
Open guideCP3219A evidence index and Tax Court deadline checklist
Checklist for building a CP3219A evidence index while protecting the Tax Court petition deadline, Form 5564 route and IRS response proof.
Open guideCP3219A Tax Court petition proof checklist
Checklist for preserving CP3219A Tax Court petition proof: notice deadline, petition route, service evidence, IRS file and professional review triggers.
Open guideCP3219A 90-day calendar proof checklist
Checklist for turning a CP3219A 90-day Tax Court deadline into a dated proof packet: notice date, outside-US rule, petition route and receipts.
Open guideCP14 balance due payment plan checklist
Checklist for handling an IRS CP14 balance due notice: amount, deadline, online account, payment plan options, receipts and dispute boundary.
Open guideCP14 already paid dispute proof checklist
Checklist for a CP14 notice when you already paid: compare IRS account balance, payment date, confirmation number, transcript clue, call notes and follow-up proof.
Open guideCP504 payment agreement proof checklist
Checklist for an IRS CP504 notice when you need proof of payment plan, account status, notice date, payment method and follow-up records.
Open guideCP504 levy notice response proof checklist
Checklist for an IRS CP504 levy notice: notice date, payment options, online account proof, disagreement notes, appeal boundary and follow-up packet.
Open guideIRS tax transcript notice proof checklist
Checklist for using IRS tax transcripts with a notice response: transcript type, online account, payment history, wage records, AGI and evidence notes.
Open guideCP14 payment already made online account checklist
Checklist for a CP14 balance-due notice when payment was already made: IRS online account, payment proof, tax year, SSN, notice copy and call notes.
Open guideCP49 refund offset: remaining refund and payment-plan checks
Read a CP49 by separating the refund applied, any money still due and the remaining refund. Includes a worked example and a private account-check checklist.
Open guideCP504 final notice levy state refund checklist
Checklist for an IRS CP504 final notice: balance due, payment deadline, state refund levy risk, transcript, IRS account, hardship notes and call log.
Open guideIRS payment plan online agreement proof checklist
Checklist for saving IRS online payment agreement proof: account access, balance, plan terms, direct debit details, approval screen and follow-up records.
Open guideIRS direct debit payment plan change checklist
Checklist for changing an IRS direct debit payment plan: online account, agreement terms, bank details, confirmation, payment dates and proof records.
Open guideIRS payment plan default notice response checklist
Checklist for an IRS payment plan default or warning notice: notice date, agreement terms, missed debit, balance, online account and response proof.
Open guideIRS direct debit installment agreement bank change checklist
Checklist for changing the bank account on an IRS direct debit installment agreement: online account, routing number, notice, timing and proof.
Open guideIRS skipped direct debit payment trace checklist
Checklist for tracing a skipped IRS direct debit installment payment: bank proof, IRS online account, agreement status, default notice and call log.
Open guideIRS payment plan reinstatement default notice checklist
Checklist for responding to an IRS installment agreement default notice: CP523, missed payments, reinstatement fee, proof and call log.
Open guideIRS CP14 balance notice payment plan checklist
Checklist for an IRS CP14 balance notice: notice date, tax year, payments, online account, due date, disagreement evidence and payment-plan route.
Open guideIRS CP14 payment already made trace checklist
Checklist when an IRS CP14 arrives after payment: trace date, method, confirmation, tax year, account posting and notice response evidence.
Open guideIRS misapplied payment wrong tax year checklist
Checklist for tracing an IRS payment applied to the wrong tax year: CP14, online account, confirmation, tax period, call notes and proof packet.
Open guideIRS payment plan new balance default risk checklist
Checklist for an IRS payment plan when a new balance appears: default risk, CP14, online account, current-year filing, direct debit and proof packet.
Open guideIRS CP166 direct debit failed bank account checklist
Checklist for IRS CP166 after a direct-debit installment payment fails: bank account, payment proof, OPA update, penalty relief and reinstatement evidence.
Open guideIRS online payment plan fee July 2026 checklist
Checklist for the July 2026 IRS online payment-plan fee change: application route, effective date, direct debit, low-income status and confirmation.
Open guideIRS Direct Pay: cancel cutoff and pending-payment checks
Separate the two-business-day change cutoff from post-payment checks. What to save, when to recheck Pending and how to avoid a duplicate payment.
Open guideIRS same-day wire payment: worksheet and confirmation checklist
Checklist for an IRS same-day wire: worksheet, tax type code, bank cutoff, separate payment periods and transaction confirmation.
Open guideEFTPS enrollment eligibility: individuals and business setup
Check who can still enroll in EFTPS, the five-business-day setup window, individual payment alternatives and separate payment proof.
Open guideUS Cost Guide