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Save for a home while comparing debt-payment allocations

A down payment is only part of the cash needed for a home. Build a complete cash target, then compare saving more now with reducing one existing debt faster under the same monthly budget.

Sources checked: 2026-09-09

How to read this tool

Educational U.S. planning for one fixed-rate debt and cash savings. This model does not determine a minimum required down payment, loan approval, credit-score change, tax liability or when you should buy.

Fictional example

All defaults are fictional. A $200,000 target price with 10% down means $20,000 down payment. Adding $5,000 closing cash, $2,000 moving cash and an $8,000 reserve gives a $35,000 target. With $25,000 saved, the starting gap is $10,000. Both plans receive $1,000 per month; the $250 debt payment is inside that amount. Rates of 18% on debt and 2% on savings are assumptions, not current offers.

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Your inputs

Amounts in U.S. dollars (USD). Percentages use 0–100 unless a field states otherwise. Replace every example value with figures that match your situation.

Your inputs

Cash goal

Target home price ($)

Fictional fixed target price, not a future price forecast.Allowed range: 1 – 10000000

Chosen down payment (%)

Your scenario, not a program minimum. Zero and a 100% cash purchase are allowed.Allowed range: 0 – 100

Closing cash beyond the down payment ($)

Include net cash-paid closing costs and prepaids once. Do not repeat them in moving or reserve.Allowed range: 0 – 10000000

Moving and immediate repair cash ($)

One-time funds needed at purchase, separate from closing charges.Allowed range: 0 – 10000000

Cash reserve to keep after buying ($)

Included once in the cash target. It is not spent on the down payment.Allowed range: 0 – 10000000

Funding

Current cash savings, including the reserve ($)

Do not add a reserve again if already included. No initial lump sum is taken from savings to pay debt.Allowed range: 0 – 10000000

Total monthly budget for debt plus home savings ($)

After essentials, taxes and other commitments. Includes the required debt payment below, not just the extra.Allowed range: 0 – 1000000

One existing debt

Current debt balance ($)

One fixed-rate debt only. Zero means already paid off.Allowed range: 0 – 10000000

Contractual annual debt rate (%)

Fictional rate; monthly interest approximation without new charges or fees.Allowed range: 0 – 36

Fixed required monthly debt payment ($)

Must exceed the first modeled month of interest if debt remains. Not a declining card minimum. Ignored if balance is zero.Allowed range: 0 – 1000000

Two allocations

Plan B extra monthly debt payment ($)

Plan A pays only the fixed debt payment. Plan B adds this amount; it must fit within the same total budget. Ignored with no debt.Allowed range: 0 – 1000000

Annual net cash-savings yield (%)

Hypothetical effective annual yield after assumed taxes and fees, converted to monthly. Not a current bank offer.Allowed range: 0 – 15

Comparison horizon (whole months)

The plan keeps saving through this horizon even if the goal is reached earlier. No home purchase is simulated.Allowed range: 1 – 360

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Enter your own figures, then calculate. The filled-in values are a fictional example.

Build a cash target with the reserve included once

The target equals home price times your chosen down-payment percentage, plus net closing cash, moving and initial repair cash, and the reserve you intend to keep. Current savings already include any existing reserve; do not add it twice. No initial withdrawal is made to reduce debt.

A zero down-payment scenario is only arithmetic, not eligibility for a no-down-payment loan. A 100% down payment represents a cash-purchase goal. No future price growth or program assistance is assumed.

Compare two allocations of exactly the same monthly budget

The fixed debt payment is included in the total budget. Plan A puts what remains into savings. Plan B sends the selected extra to debt first and saves the remainder. If the final debt payment is smaller than the allocation, the unused money goes into savings immediately in that month.

Debt interest is the opening balance times the annual rate divided by twelve, rounded to cents before the payment. Savings use the monthly equivalent of the entered effective annual net yield, with contributions at month end and unrounded intermediate savings balances. Neither plan changes the total available budget.

Read cash readiness alongside remaining debt

The first target month records when savings first reach the complete cash target. It may be month zero if savings already cover it. The remaining debt at that moment is reported separately. A plan reaching the cash target sooner may still owe more debt.

The comparison-date results keep both plans running to the same chosen month; they do not assume a house was bought at the first target month. Savings less debt is a narrow comparison measure, not a household net-worth statement or mortgage underwriting test.

Replace estimates before making a commitment

Review actual cash-to-close estimates, future housing costs, account terms and the accessibility of your reserve. The CFPB distinguishes down payment, closing costs and a cushion; HUD describes independent housing counseling and online search.

The fixed payment must be sufficient to reduce the modeled debt. A real card minimum may change, so review statements. Extra repayment can reduce modeled interest while delaying cash accumulation; this tool does not choose which tradeoff is right for you.

Official sources

CFPB — plan the down payment and a cushionSources checked: 2026-09-09
CFPB — Closing Disclosure explainedSources checked: 2026-09-09
HUD — housing counseling and online searchSources checked: 2026-09-09
CFPB — how credit-card interest is calculatedSources checked: 2026-09-09

How to read this tool

Your inputs

Your scenario

Build a cash target with the reserve included once

Compare two allocations of exactly the same monthly budget

Read cash readiness alongside remaining debt

Replace estimates before making a commitment

Official sources

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