Personal Line of Credit Payoff Calculator: Months to Zero Out
See how long a personal line of credit takes to clear at a fixed monthly payment, and how much of that money is pure interest rather than principal.
Adjust the inputs and select Calculate for a full breakdown.
Year-by-year payoff schedule
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | Time to pay off | Total interest | Total paid |
|---|---|---|---|
| $10k · 12% · $300/mo | 3y 5m | $2,224.95 | $12,224.95 |
| $25k · 10% · $600/mo | 4y 4m | $5,837.71 | $30,837.71 |
| $5k · 15% · $200/mo | 2y 7m | $1,032.66 | $6,032.66 |
| $50k HELOC · 9% · $800/mo | 7y 1m | $17,722.44 | $67,722.44 |
How This Calculator Works
Enter the current drawn balance, the LOC's interest rate, and the fixed monthly payment. The calculator charges interest each month, deducts the payment, and counts the months until the balance reaches zero. Most personal LOCs require only interest-only minimums; paying above the minimum is what actually reduces the balance.
The Formula
Debt Payoff Time
B = balance, P = fixed monthly payment, r = monthly rate (APR ÷ 12), n = months to clear
Worked Example
A $10,000 personal LOC at 12% APR paid down at $300/month clears in 41 months — about 3.4 years — with roughly $2,225 of interest along the way. The minimum interest-only payment on that balance would be just $100/month, which never touches principal. The difference between the interest-only minimum and meaningful paydown is the gap most LOC borrowers underestimate.
Key Insight
Personal lines of credit are convenient but expensive when carrying a balance. Unsecured personal LOCs price at 11% to 17% APR currently — between credit cards and personal installment loans. HELOCs (secured by home equity) price at prime + 1 to 3 points, often half the rate of unsecured personal LOCs. If you have meaningful home equity, a HELOC consistently beats an unsecured personal LOC for any sustained balance.
PLOC vs credit card vs personal loan
Three similar but distinct unsecured credit products. (1) PERSONAL LINE OF CREDIT — revolving credit at 9-15% APR; minimum interest-only payments typically; can re-draw repeatedly. Useful for variable cash flow needs. (2) PERSONAL LOAN — fixed amount, fixed term (1-7 years), fixed payment, fixed rate 7-20%. Useful for known major expense.
(3) CREDIT CARD — revolving credit at 18-29% APR; rewards/protection benefits; ongoing spending mechanism. Useful for ongoing transactions with monthly payoff.
PLOC is rarely the right choice for: planned major expense (personal loan fixed terms cheaper and more disciplined); ongoing spending (credit card with rewards better); short-term cash needs that should be saved for. PLOC is appropriate for: business owners with variable cash flow; consumers with episodic large expenses uncertain in amount or timing; backup credit access without specific upcoming purchase.
The interest-only minimum trap
Many PLOC products allow interest-only minimum payments. For $20K balance at 12% APR: minimum payment $200/month (just interest). Pay minimum forever and balance stays at $20K — paying $200/month indefinitely (~$2,400/year × forever).
Modest principal contributions accelerate dramatically. $300/month ($100 over interest): paid off in ~10 years. $500/month: paid off in ~4 years. The non-linear acceleration from small principal additions is key to escaping the interest-only trap.
Strategy: set minimum payment to interest + 2-5% of principal. For $20K balance: $400-$700/month minimum. Most lenders allow this; default is often interest-only. Switching to higher payment structure forces principal reduction without separate discipline.
Personal LOC vs alternatives — cost comparison
Reference unsecured credit product features and costs.
| Product | Typical APR | Structure | Best for |
|---|---|---|---|
| PLOC (unsecured) | 9-15% | Revolving, variable | Variable cash needs |
| Personal loan | 7-20% | Fixed term, fixed payment | Known major expense |
| Credit card | 18-29% | Revolving, variable | Ongoing spend + rewards |
| HELOC (home secured) | 7-9% | Revolving, variable | Lowest cost; home risk |
| Home equity loan | 7-8% | Fixed term, fixed payment | Lowest cost lump sum; home risk |
Home-secured options (HELOC, home equity loan) are dramatically cheaper than unsecured options but require home equity AND put home at default risk. For consumers without home equity, PLOC at 9-15% APR is meaningfully cheaper than credit card at 22%+. For known expenses, personal loan's fixed structure typically wins over PLOC's revolving structure.
Frequently Asked Questions
What is a personal line of credit?
An unsecured revolving credit line — borrow up to a limit, repay, and re-draw. Typical limits $1,000 to $100,000+. Rates higher than secured borrowing (HELOC, auto loan) because no collateral backs the loan.
What rate should I expect?
Unsecured personal LOC: 11% to 17% APR currently for prime credit. Subprime: 20% to 30% APR. HELOC (against home equity): prime + 1 to 3 points (currently 8% to 11%). Personal LOC sits between credit cards (higher) and HELOCs (lower).
Personal LOC vs personal loan?
Personal LOC: revolving, draw what you need, variable rate. Personal loan: lump sum, fixed payment, fixed rate. LOC suits irregular borrowing needs; personal loan suits one-time large expenses with planned payoff. Loans typically have lower rates than LOCs for the same borrower.
Does it affect credit score?
Yes — opened with a hard inquiry (temporary drop). Then the available limit increases your total credit available, which can improve utilization ratios on credit cards. Carrying high balances on the LOC itself hurts utilization. Missed payments hurt score same as any other revolving credit.
Should I take a HELOC instead?
If you have meaningful home equity, almost always yes. HELOC rates run half or less of unsecured personal LOC rates, and interest may be deductible if used for home improvements. The trade-off: HELOC uses your home as collateral; default risks the property.
When is this calculator unreliable?
Because PLOCs have variable rates that may change during payoff period, allow re-drawing from the LOC during payoff (extending debt indefinitely), and typically permit interest-only minimum payments (trapping balance). For honest payoff strategy, commit to fixed monthly payment higher than minimum and avoid re-drawing.
References & Authoritative Sources
- Consumer Financial Protection Bureau (CFPB) — Personal Lines of Credit Guidance · consulted June 1, 2026 · Federal regulator consumer guidance
- Federal Reserve — Consumer Credit G.19 — U.S. Personal Credit Statistics · consulted June 1, 2026 · Official U.S. personal credit data
- American Bankers Association (ABA) — Personal Lending Industry Reports · consulted June 1, 2026 · Industry trade association data
Related Calculators
Methodology & Review
Personal line of credit (PLOC) payoff calculates time and cost to clear unsecured personal LOC balance. The calculator returns payoff schedule. U.S. PLOC rates 2024: typical 9-15% APR (variable); credit limit $5K-$50K based on credit score; minimum monthly payment typically interest only + 1-2% of principal; can re-borrow up to credit limit. Differs from personal loan: revolving credit vs fixed term; variable rate; can be drawn down and re-paid repeatedly. RELIABILITY: Reliable for fixed-payment payoff modeling. Less reliable for PLOCs because: variable rate may change during payoff period; borrower can re-draw from the LOC mid-payoff, extending the debt; minimum payments often interest-only leading to indefinite carrying.
Updated