Note: This article discusses Indonesian financial products. While the principles comparing safe, low-risk investments apply globally, specific products, interest rates, and tax treatments vary by country.

Time Deposits vs Government Bonds vs Money Market Funds

These three instruments are often cited as choices for “money that shouldn’t lose value.” All are low-risk, but have very different characteristics. Let’s compare in detail.

Time Deposits

How They Work

You place money in a bank for a set period (1, 3, 6, or 12 months). The bank pays fixed interest. If withdrawn before maturity, there’s usually a penalty.

Key Numbers

Aspect	Details1
Typical interest	2.5-4% per year (depends on bank and amount)
Interest tax	PPh Final 20% (Indonesian income tax)
After-tax return	2-3.2%
Minimum	IDR 1-10 million (varies by bank)
Deposit insurance	Yes, up to IDR 2 billion per depositor per bank via LPS (Lembaga Penjamin Simpanan)
Liquidity	Low — penalty if withdrawn before maturity

Pros

• Very easy to understand — everyone knows what a deposit is
• LPS-insured up to IDR 2 billion
• Guaranteed returns — no price fluctuation

Cons

• After-tax returns often lose to inflation. If inflation is 4% and after-tax deposit return is 2.5%, your money decreases in real value. For long-term goals like retirement, deposits are not suitable.
• Not liquid — locked during the term
• 20% tax significantly cuts returns (in Indonesia). Learn about asset allocation strategies for better long-term returns.

Government Bonds (Retail)

Types of Retail Government Securities (Indonesian Examples)

Product	Tenor	Coupon	Can Sell Before Maturity?
ORI (Retail Government Bonds)	3 years	Fixed	Yes, in secondary market
SR (Retail Sukuk)	3 years	Fixed	Yes, in secondary market
SBR (Savings Bonds)	2 years	Floating	No (limited early redemption)
ST (Savings Sukuk)	2 years	Floating	No (limited early redemption)

Key Numbers

Aspect	Details2
Typical coupon	5-7% per year (depends on series)
Coupon tax	PPh Final 10%
After-tax return	4.5-6.3%
Minimum	IDR 1 million
Maximum	IDR 5 billion
Default risk	Very low (government guaranteed)

Pros

• Higher returns than deposits — both before and after tax
• Lower tax — only 10% vs 20% for deposits (in Indonesia)
• Government guaranteed — near-zero default risk
• Affordable minimum — IDR 1 million

Cons

• Only available during offering periods — government issues retail bonds a few times per year
• Fixed tenor — money locked for 2-3 years (except ORI/SR tradeable in secondary market)
• Price can fluctuate in secondary market (for ORI and SR)

How to Buy

Retail government bonds can be purchased through official distribution partners during offering periods:

• Banks (major banks)
• Securities firms
• Fintech platforms

Monitor offering schedules on government finance ministry websites or financial media.

Money Market Mutual Funds

How They Work

Investment managers pool funds and invest in short-term instruments: deposits, central bank certificates, and short-tenor bonds (< 1 year).

Key Numbers

Aspect	Details3
Typical return	3-5% per year
Capital gains tax	0% for individual investors
After-tax return	3-5% (same — tax free!)
Minimum	IDR 10,000
Liquidity	T+1 (1 business day)
Risk	Very low

Pros

• Tax-free (in Indonesia) — this is the biggest advantage
• Very liquid — can be withdrawn anytime, funds arrive T+1
• Very low minimum — IDR 10,000
• No early withdrawal penalty
• NAV relatively stable — almost never drops

Cons

• Returns slightly lower than government bonds (but after tax can be competitive)
• Not deposit-insured — but underlying assets are deposits and government bonds
• Quality varies — choose those with large AUM from reputable managers

Example Products (Indonesian)

Product	Investment Manager
Bahana Dana Likuid	Bahana TCW
Sucorinvest Money Market Fund	Sucorinvest
Mandiri Investa Pasar Uang	Mandiri Manajemen Investasi
BNP Paribas Rupiah Plus	BNP Paribas

These products are available on platforms like Bibit, Bareksa, or IPOT.

Head-to-Head Comparison

Criteria	Time Deposits	Govt Bonds	Money Market Funds
Pre-tax return	2.5-4%	5-7%	3-5%
Tax	PPh 20%	PPh 10%	0%
After-tax return	2-3.2%	4.5-6.3%	3-5%
Minimum	IDR 1-10 million	IDR 1 million	IDR 10,000
Liquidity	Low	Low-medium	High
Guarantee	LPS (IDR 2 billion)	Government-backed	None (but very safe)
Availability	Anytime	During offerings	Anytime

When to Use Which?

Emergency fund → Money Market Funds

High liquidity, tax-free (in Indonesia), low minimum. Best choice for emergency funds.

Money for 2-3 years ahead → Government Bonds

Highest after-tax returns, government guaranteed. Suitable for medium-term goals like house down payment or wedding costs.

Very large amounts → Time Deposits (partial)

If you have more than IDR 2 billion (the LPS insurance limit), spreading across several banks for insurance coverage makes sense. But for smaller amounts, deposits are less competitive.

Be Careful with Bank Advertising Claims: “Deposits Are Safest”

Banks often advertise deposits as “the safest investment” or “the best solution for your money.” There’s something they don’t tell you.

Why Do Banks Promote Deposits, Not Alternatives?

Simple conflict of interest:

• Banks profit from deposits — they use your money for loans at higher interest
• Banks don’t profit from government bonds — money goes directly to government, banks only act as sales agents (minimal fees)
• Banks don’t profit from money market funds — money is managed by other investment managers

It’s natural their marketing is more aggressive for deposits.

Claims vs Reality

Bank Claim	Reality
”Deposits 100% safe, insured”	✅ True but only up to IDR 2 billion per bank via LPS. Above that? Not insured.
”Guaranteed returns, no risk”	⚠️ True nominal returns are guaranteed, but after 20% tax and inflation, real value can drop.
”Safer than govt bonds”	❌ Wrong. Government bonds are sovereign-guaranteed (lower default risk than any bank).
”Best choice for emergency funds”	❌ Wrong. Deposits aren’t liquid (penalty for early withdrawal). Money market funds are far more suitable.

Simulation: Inflation Erodes Deposits

Example: You have IDR 100 million in a deposit at 3.5% per year.

Year 1:

• Gross interest: IDR 3,500,000
• PPh 20% tax: -IDR 700,000
• Net interest: IDR 2,800,000 (2.8% net return)

If inflation is 4% per year:

• Real value of IDR 100 million after 1 year = IDR 96 million (in purchasing power)
• Although nominal balance increases to IDR 102.8 million, purchasing power decreases

After 5 years:

• Nominal balance: ~IDR 114.7 million
• Real purchasing power (4% inflation): ~IDR 94.2 million
• You lost 5.8% in real value — despite feeling “money increased”

Compare with SBN (6.5% coupon, PPh 10% tax)

Year 1:

• Gross coupon: IDR 6,500,000
• PPh 10% tax: -IDR 650,000
• Net coupon: IDR 5,850,000 (5.85% net return)

If inflation is 4%:

• Real return: +1.85% (still positive!)

After 3 years:

• Total net coupons: ~IDR 17.55 million
• Real purchasing power: ~IDR 105.6 million (inflation-adjusted)
• You gained 5.6% real — money truly increased

Difference between deposits and SBN after 3 years (with IDR 100 million):

• SBN provides IDR 11.4 million more (in real value)
• Or 12.1% higher net return

Why Don’t Banks Tell You This?

Because they sell deposits, not government bonds. Their marketing focuses on:

• “Deposit insurance safety” (but doesn’t mention limits)
• “Tradition” (deposits have been around for decades, so “trustworthy”)
• “Easy to understand” (no need to learn anything)

What they don’t tell you:

• PPh 20% tax significantly cuts returns
• Inflation can make real returns negative
• SBN has lower tax (PPh 10%) and higher returns
• Money market funds (RDPU) are tax-free and more liquid

What Should You Do?

Don’t just accept bank advertising at face value. Before opening a deposit:

1. Calculate after-tax returns: Interest times 0.8 (because 20% tax in Indonesia)
2. Compare with inflation: If inflation is higher, deposits lose real value
3. Check alternatives:
   • Government bonds (10% tax, higher returns in Indonesia)
   • Money market funds (tax-free, more liquid in Indonesia)
4. Ask yourself: Does this money need to be locked (deposit) or need liquidity (money market fund)?

Deposits aren’t bad — but they’re not “safest” or “best for everyone” as bank marketing claims. For most Indonesians, a combination of SBN + money market funds (RDPU) makes more sense.

Common Mistakes

1. Putting all money in deposits

Many Indonesians “default” to deposits because they’re familiar. But after PPh 20% tax, returns often lose to inflation.

2. Ignoring SBN because you don’t know how to buy

Retail government securities (SBN Ritel) are now very easy to buy through apps like Bibit or Bareksa. The process is even easier than opening a deposit.

3. Not considering taxes

The difference between 0% vs 10% vs 20% tax is very significant over the long term. Always compare after-tax returns, not before.

Summary

For Indonesian passive investors:

• Money market funds (RDPU) for emergency funds and short-term needs
• Retail government securities (SBN Ritel) for medium-term goals (2-3 years)
• Deposits only if there’s a specific reason (LPS insurance coverage for amounts over IDR 2 billion)

All three are the “boring part” of the portfolio — but this boring part is what lets you sleep peacefully.

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References

1. LPS (Lembaga Penjamin Simpanan), “Simpanan yang Dijamin”, https://lps.go.id/simpanan-yang-dijamin/ — Guarantee limit of IDR 2 billion per depositor per bank, per LPS Regulation No. 4/PLPS/2020.

2. Direktorat Jenderal Pajak, “Bukti Pemotongan PPh Final Pasal 4 Ayat (2) atas Bunga Deposito”, https://www.pajak.go.id/ — Deposit tax PPh Final 20% per UU PPh Article 4 paragraph (2).

3. Kementerian Keuangan RI, “Surat Berharga Negara Ritel”, https://djppr.kemenkeu.go.id/sbnritel — Information on retail government securities (ORI, SR, SBR, ST) and historical coupon rates. PPh Final 10% per UU PPh.

4. Peraturan Pemerintah No. 55 Tahun 2022, “Penyesuaian Pengaturan di Bidang Pajak Penghasilan” — Mutual funds are tax-free for individual investors (Article 4 paragraph (3) letter i of UU PPh).

5. Bank Indonesia, “Inflasi Indonesia” — Indonesian annual inflation averages 3-4% (2020-2025). Source: https://www.bi.go.id/id/statistik/indikator/data-inflasi.aspx

6. Otoritas Jasa Keuangan (OJK), “Reksa Dana Pasar Uang”, https://sikapiuangmu.ojk.go.id/ — Guide to money market mutual funds, underlying assets, and risks.

7. UU No. 24 Tahun 2002, “Surat Utang Negara” — Legal basis for SBN issuance, payment guaranteed by the state.

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Disclaimer: This article is for educational purposes only, not investment advice.

Related Articles

• How Much Emergency Fund Do You Need? Calculator & Tips
• Government Bonds (SBN) Complete Guide: ORI, SR, SBR, and ST
• Why Bank Deposits Often Lose to Inflation
• Bibit vs Bareksa vs IPOT: Which Mutual Fund Platform Is Best for You?
• Beginner’s Guide to Investing in Indonesia: Simple Steps to Start

Footnotes

1. Interest rates vary between banks. Check LPS (Lembaga Penjamin Simpanan) for guaranteed banks and rates. PPh Final 20% per Indonesian Income Tax Law (UU PPh) Article 4 paragraph (2). ↩

2. Retail government securities (SBN Ritel) are issued by the Ministry of Finance of Indonesia (DJPPR Kemenkeu). PPh Final 10% per Indonesian Income Tax Law (UU PPh). ↩

3. Money market funds (Reksa Dana Pasar Uang/RDPU) invest in money market instruments with tenor < 1 year. Tax-free for individual investors per Indonesian Government Regulation (PP) 55/2022. Historical return data available at OJK. ↩