1,402 · calculator guide · August 24, 2026
What the repayment budget calculator measures
This calculator looks at one specific time window: now through a proposed loan due date. It adds cash already available and reliable income expected before that date, then subtracts essential expenses, other required debt payments and the proposed repayment. The result shows a projected cash position and its distance from a user-chosen buffer.
The tool does not declare a loan affordable. Affordability includes facts a six-field worksheet cannot know, such as variable income, dependents, medical needs, legal priorities, state protections and the consequence of a missed bill. A positive number is a planning estimate, while a negative number exposes a gap that needs investigation.
All entries remain in the browser. Borrow Radar does not collect a budget, connect the result with an offer or make a credit decision. Use rounded figures for initial scenarios, then repeat the calculation with exact dates and amounts from pay statements, account records, bills and the proposed agreement.
Choose the due-date window before entering dollars
A monthly budget can miss the timing problem that makes short-term borrowing difficult. Income arriving on the twentieth cannot fund an automatic debit on the fifteenth without another resource. Write down today, the contractual payment date and every reliable receipt or required payment between those two dates before using the form.
Cash available now means funds that can actually be used, after pending card transactions and account holds. Reliable income before the due date includes net pay or benefits expected to clear in time. Do not enter gross wages, a possible overtime shift, a tax refund without a confirmed date or money already assigned to an earlier obligation.
If a loan has several installments, run a separate window for each payment or use the tightest period. A first payment that fits does not prove the second will. When dates vary, create a simple calendar and calculate the running balance after each event instead of adding an entire month into one total.
Separate essential expenses and other debt payments
Essential expenses are the costs needed to protect housing, utilities, food, health, insurance, employment transportation and other core household needs during the selected interval. The exact categories vary. Use the amount due before the loan date, not a monthly average that hides a large bill inside the window.
Other required debt payments include obligations already scheduled before the same date, such as a card minimum, auto payment, support obligation or another installment. Do not put the proposed new repayment in this field because it has its own input. Avoid excluding a payment simply because the creditor has not sent a reminder.
The form does not tell a user which bill to delay. Missing rent, utilities, insurance, vehicle, tax, support or secured-debt payments can have very different consequences. CFPB budgeting material recommends listing bills and weighing risks. Contact the company or a qualified adviser when prioritization requires legal or personal guidance.
Why the minimum cash buffer is a separate input
A zero ending balance leaves no room for a higher grocery bill, transportation problem, prescription or delayed deposit. The minimum buffer lets the user preserve an entered amount rather than treating every dollar as available for debt. It is not a universal emergency-fund recommendation; it is a scenario threshold selected for this short window.
Cash after repayment equals resources minus essentials, other debts and the proposed loan payment. Margin versus buffer subtracts the chosen buffer from that remainder. A $75 ending balance with a $100 buffer produces a negative $25 margin even though the account is not yet below zero. The label distinguishes a shortfall from falling below the preferred cushion.
Repayment share divides the proposed payment by resources expected before the due date. It describes concentration, not a lending ratio or approval standard. A high percentage can reveal that one debit dominates the available cash, but no percentage automatically determines whether the household can or should pay.
Interpret the three possible status messages
Projected shortfall means the entered resources do not cover listed essentials, other debts and repayment. It does not predict the exact bank balance because omitted transactions and timing still matter. It indicates that the current set of assumptions cannot all be funded and should not be treated as a complete repayment plan.
Below entered buffer means the listed obligations can be paid mathematically, but less than the user-selected cushion remains. Entered buffer preserved means the remainder meets or exceeds that threshold. Neither positive status accounts for expenses outside the window, a lender fee omitted from repayment or income that fails to arrive.
Keep the output beside a dated list of transactions. If the displayed position differs from the running account balance, look for a duplicated income item, a monthly expense entered in the wrong window, pending card activity, a fee included in principal but not repayment or a bill whose date moved.
Use conservative scenarios for uncertain income
Hourly schedules, tips, commissions, gig work and benefit timing can change. Begin with the amount supported by the lowest recent comparable pay period, not the best month. Run a second scenario with only income already earned or formally scheduled. The difference shows how much the repayment plan depends on uncertainty.
For seasonal or irregular work, Consumer.gov suggests using a longer income history to estimate a monthly figure. A due-date tool still needs timing: divide that estimate only when the expected receipt pattern supports it. An annual average cannot make funds arrive before an automatic debit.
Do not count new borrowing as income. If the result becomes positive only after adding another loan, the worksheet is describing a debt sequence rather than repayment from household resources. Track the second principal, fee, due date and data-sharing risk separately.
Run a base case and two stress cases
Start with exact expected amounts. Then reduce income by a realistic delay or short-pay figure. For the second stress case, increase one variable essential cost such as food, fuel or utilities. Do not change several fields until the base case is saved, or it becomes difficult to understand which assumption created the gap.
Next compare the payment from the written offer with a smaller principal scenario using the cost calculator. Reducing principal can lower a flat fee and payoff, but only borrow an amount that actually resolves the need; an undersized loan that leaves the original bill unpaid adds cost without solving the timing problem.
Compare a real creditor extension or payment arrangement using its actual charge and date. A delayed utility or medical payment may have consequences, while a negotiated due-date change may be free. Verify the policy instead of entering zero based on an assumption. The worksheet supplies arithmetic, not permission to breach an agreement.
Common items the first calculation misses
Review account activity and a bill calendar after the first result. A small omitted transaction can reverse a narrow positive margin. If a creditor controls an automatic debit, confirm the amount and processing date; weekends and holidays can affect when a payment appears without changing the underlying obligation.
The calculator does not model bank posting order or guarantee that a transaction will clear. Maintaining a buffer can reduce, but not eliminate, that uncertainty. Contact the bank and creditor promptly when the authorization or account activity differs from the agreement.
- Pending checks, card authorizations, account holds and automatic subscriptions expected to clear before the due date.
- Payday, installment or bank late fees, returned-payment charges and overdraft consequences not included in the proposed payoff.
- Expenses paid less often than monthly, including insurance, registration, school, seasonal utility and medical costs.
- Cash needed immediately after the selected date but before the following reliable income receipt.
- A balloon payment, rollover charge or optional product that is not part of the displayed regular installment.
Turn the result into questions, not a verdict
A negative result is useful because it identifies a mismatch before money is borrowed. A positive result is only the start of review: verify state availability, service type, APR, total cost, privacy terms and the legal lender. Use the rollover calculator when the plan assumes an extension, and the installment calculator when repayment is spread across fixed monthly payments.
This guide is educational and not individualized financial, legal or debt-priority advice. The text is dated and awaits external similarity verification before public publication. Recalculate whenever a paycheck, bill, fee or due date changes; an old screenshot is not a current budget.
- Confirm the exact repayment amount and debit date in the lender agreement.
- List every resource and obligation chronologically through the due date.
- Run conservative income and expense scenarios while keeping the original result.
- Ask creditors about verified due-date changes, hardship options or payment plans before missing a payment.
- Review lower-cost assistance and decline an offer whose lender, price, data use or repayment path is unclear.