Last updated: April 24, 2026
A $200,000 mortgage at 30 years and 6.5% ends up costing $455,045 in total — meaning you pay $255,045 in interest on the original principal. But with the interest deduction under Law 8 of March 15, 2010, you can recover $30,000-$60,000 in cumulative tax savings over the life of the loan, depending on your marginal income tax rate. This guide shows you the real numbers with a year-by-year amortization table, tax-deduction calculation, and break-even analysis for prepayments and refinancing.
Pair it with the mortgage financing guide for foreigners, Law 468 Preferential Interest, and model your ROI with the Yield Calculator. If you haven't picked a zone yet, see Panama price per square meter by zone and estimate a specific value with PanamaEstimate.
How the French Amortization System Works in Panama
In Panama the standard is the French amortization system: fixed monthly payment with a variable principal/interest split. The early years go almost entirely to interest; gradually more goes to principal.
Monthly payment formula
Payment = P × [i × (1+i)^n] / [(1+i)^n - 1]
Where:
- P = original principal ($200,000).
- i = monthly interest rate (6.5% APR / 12 = 0.005416).
- n = total number of payments (30 years × 12 = 360).
Result: monthly payment of $1,264.
Amortization Table: $200,000 @ 6.5% over 30 Years
Yearly summary
| Year | Annual payment | Interest paid | Principal paid | % principal | Ending balance |
|---|---|---|---|---|---|
| 1 | 15,168 | 12,937 | 2,231 | 14.7% | 197,769 |
| 2 | 15,168 | 12,787 | 2,381 | 15.7% | 195,388 |
| 3 | 15,168 | 12,628 | 2,540 | 16.7% | 192,848 |
| 5 | 15,168 | 12,284 | 2,884 | 19.0% | 187,116 |
| 10 | 15,168 | 11,002 | 4,166 | 27.5% | 170,002 |
| 15 | 15,168 | 8,753 | 6,415 | 42.3% | 134,350 |
| 20 | 15,168 | 6,358 | 8,810 | 58.1% | 98,698 |
| 25 | 15,168 | 3,432 | 11,736 | 77.4% | 52,798 |
| 28 | 15,168 | 1,471 | 13,697 | 90.3% | 19,500 |
| 30 | 15,168 | 469 | 14,699 | 96.9% | 0 |
Total paid over 30 years: $455,045. Total interest: $255,045. Original principal: $200,000.
Key observations
- Year 1: only 14.7% of each payment goes to principal.
- Crossover point: at year 18, principal paid per payment exceeds interest for the first time.
- Year 20: 58.1% goes to principal.
- Year 30: 96.9% goes to principal.
Income Tax Deduction on Interest: Law 8 of 2010
Regulatory framework
Law 8 of March 15, 2010 (Tax Reform) allows deduction from income tax of:
- Mortgage interest on the taxpayer's primary residence.
- Annual cap: $15,000 in deductible interest.
- Applies only to the residence the taxpayer actually lives in.
- Second home, rental investment, or commercial → Law 8/2010 does NOT apply (deductions go against the corresponding income stream).
Tax-savings calculation
Panama 2026 income tax brackets (Tax Code art. 700):
- Up to $11,000: 0% (exempt).
- $11,000 - $50,000: 15%.
- Above $50,000: 25%.
Example: professional with $75,000 annual income and $200K mortgage @ 6.5% (year 1):
- Year 1 interest: $12,937 (under the $15,000 cap — fully deductible).
- Marginal rate (bracket 2): 25%.
- Year 1 tax savings: $12,937 × 25% = $3,234.
Cumulative 30-year savings
| Year range | Deductible interest | Marginal rate | Tax savings |
|---|---|---|---|
| Years 1-5 | $63,000 | 25% | $15,750 |
| Years 6-10 | $56,000 | 25% | $14,000 |
| Years 11-15 | $46,000 | 25% | $11,500 |
| Years 16-20 | $34,000 | 25% | $8,500 |
| Years 21-25 | $19,000 | 25% | $4,750 |
| Years 26-30 | $5,000 | 25% | $1,250 |
| Total | $223,000 | $55,750 |
Real net cost after deduction: $255,045 - $55,750 = $199,295 in real net interest.
How to apply the deduction
- The bank issues an annual certification with the breakdown of interest paid.
- The taxpayer files Form 710 with ANIP before March 15 of the following year.
- The amount is reported in the special-deductions box (Law 8/2010).
- Bank certification is attached.
- ANIP verifies and applies the deduction to the annual income tax calculation.
Break-Even: Refinance vs. Hold
When refinancing makes sense
Refinancing makes sense if market rates have dropped more than 150 bps below your current rate and you'll hold the mortgage at least 3-4 more years.
Example
Base scenario: $200K mortgage over 30 years, 3 years paid (balance $192,848), current rate 7.2%, refi offer at 5.9%.
| Item | Hold at 7.2% | Refi at 5.9% |
|---|---|---|
| Monthly payment | $1,358 | $1,144 |
| Remaining 27-year interest | $248,640 | $179,784 |
| Gross interest savings | — | $68,856 |
| Refi costs | — | $7,000 |
| Net savings | — | $61,856 |
Break-even: $7,000 / $214 (monthly payment savings) = 33 months = 2.75 years.
When it does NOT make sense
- If you'll sell the home in < 3 years (you don't recover costs).
- If your credit profile worsened.
- If your current bank offers a no-cost renegotiation.
Partial Prepayments: The Savings Multiplier
Making extra payments accelerates amortization with an exponential effect on interest savings.
Example
$200K mortgage @ 6.5% over 30 years. If you pay $10,000 extra in year 3 (balance $192,848):
| Mode | Result |
|---|---|
| Shorten term | Mortgage finishes 2 years 4 months earlier. Interest savings: $28,500 |
| Reduce payment | Payment drops $63/month for the next 27 years. Total interest savings: $22,800 |
Rule: shortening the term always saves more than reducing the payment.
Optimal window
Years 1-15, when interest is 70-85% of each payment.
Coordinating with the bank
- Notify the prepayment in advance (48 hours typical).
- Request a formal recalculation of the table.
- Specify the mode (shorten term vs. reduce payment).
- Panama generally does NOT charge prepayment penalties on standard mortgages.
Early Payoff vs. Alternative Investment
If you have $50,000 excess, should you pay down the mortgage or invest?
Decision rule
If Expected return on alternative > Mortgage rate × (1 - Marginal tax rate)
→ Invest
Else:
→ Prepay mortgage
Example
- Mortgage 6.5%. Marginal income tax 25%. Effective post-deduction rate: 6.5% × (1 - 0.25) = 4.88%.
- Alternative investment: balanced portfolio with expected pre-tax return of 7%, net 5.25% post-tax (25% on Panama-source gain; 0% on foreign income under territorial regime).
- Decision: alternative wins by 37 bps. Invest.
Case Study: Young Panamanian Professional
Profile: Luis (32), engineer, $68,000 annual income. Buys a $240,000 apartment in San Francisco with 20% down ($48,000 own funds + $192,000 mortgage @ 6.5% over 30 years).
Year 1 cash flow
- Monthly payment: $1,213.
- Annual payment: $14,560.
- Interest paid: $12,423.
- Principal paid: $2,137.
- Law 8/2010 income tax deduction: $12,423 × 25% = $3,106 in tax savings.
- Effective net cost year 1: $14,560 - $3,106 = $11,454.
Net monthly flow
- Payment: $1,213.
- Estimated HOA: $180.
- Insurance + property tax pro-rated: $90.
- Total monthly cost: $1,483.
- Monthly tax savings: $259.
- Net monthly cost: $1,224.
Comparable to equivalent rent ($1,300-$1,500/month).
Strategic decision
In year 8, Luis receives a $15,000 bonus. Options:
- Prepay: $31,500 in interest savings + 2-year term reduction.
- Invest in S&P 500: expected net $23,500 over the remaining 22 years.
- 50/50: prepay $7,500 + invest $7,500.
Luis chooses option 3: balance between security and optimization.
Sources and Regulations
- Law 8 of March 15, 2010 — Tax Reform, mortgage interest deduction.
- Panama Tax Code — arts. 694, 700 (income tax brackets).
- Law 468 of 2020 — Preferential Interest for first home.
- ANIP — Form 710, special-deductions box.
- Superintendencia de Bancos de Panamá (SBP) — mortgage regulation.
- ACOBIR — market rate reports.
- Banks: Banco General, Banco Nacional, Banistmo, Global Bank, BAC Credomatic.
Rate data are estimated ranges based on Panamanian bank queries and ACOBIR reports. For specific offers, consult each bank directly. Amortization figures are illustrative.
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- PanamaEstimate
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Want a personalized mortgage simulation with real tax split? We coordinate a session with a mortgage advisor + Panamanian tax specialist to model your specific case: year-by-year table, Law 8/2010 tax savings, prepayment and refinance break-even analysis. Ask Alma with the estimated amount, term, and use (primary residence / investment).