Estimate revolving credit capacity, drawn-balance payments and draw-to-repayment changes on a defined monthly HELOC timeline.
01 / CALCULATION INPUTS
02 / RESULT & SUPPORTING CALCULATIONS
This defined monthly model is a planning estimate, not lender approval. Actual HELOCs may use daily accrual, minimum payments, rate floors, caps or other fees not modeled here.
| Month | Opening | New draw | Annual rate % | Interest | Regular principal | Extra principal | Payment | Closing | Cash fee |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 2 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 3 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 4 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 5 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 6 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 7 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 8 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 9 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 10 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 11 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 12 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 13 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 14 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 15 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 16 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 17 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 18 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 19 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
| 20 | 100000.00 | 0.00 | 12.0000 | 1000.00 | 0.00 | 0.00 | 1000.00 | 100000.00 | 0.00 |
Rows 1–20 of 360
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Keep unused credit separate from drawn money and model future draws, forward-only rate changes and the draw-to-repayment transition on one monthly timeline.
Keep unused credit separate from drawn money and model future draws, forward-only rate changes and the draw-to-repayment transition on one monthly timeline. Supporting calculations and limitations are shown alongside the result, with relevant local examples.
HELOC Calculator inputs are processed in browser memory. Entered measurements, addresses, dates and financial amounts are not sent to external calculation services or saved by this calculator. Ordinary website page requests may still be logged. Clipboard copying occurs only when you choose it.
Capacity is max(0, property value times your configured maximum combined LTV minus existing secured mortgage balances). This is an arithmetic ceiling, not an approved credit limit or lender decision.
No. Loan interest is charged only on the outstanding drawn balance. Initially unused credit is displayed separately. Optional cash-paid origination and annual line fees are modeled separately and do not become borrowed principal.
Interest-only mode pays the drawn balance times the nominal monthly rate. Amortizing draw payments are recalculated over the entire remaining draw-plus-repayment timeline. Repayment-period payments use the remaining repayment term.
They take effect at the start of the indicated one-based month, before that month’s interest. Additional draws are permitted only during the draw period. Rate changes apply forward, never retroactively, and each outstanding balance is checked against the credit limit.
It inserts a specified future rate at a chosen month using the same monthly timeline and draws. Later entered rate events still apply. Interest and repayment-payment differences are shown without repricing earlier months.
Actual contracts may use daily accrual, minimum payments, floors, caps or additional fees. This model uses nominal monthly rates, cent-rounded monthly accounting, a cash origination fee and optional annual fees during the draw period only.