Your savings bonds are quietly losing money.
The Treasury doesn't notify you when bonds stop earning interest, miss their doubling date, or when I Bond rates drop. BondMinder does.
Free calculator. No account required.
The government doesn't remind you. Nobody does.
Millions of Americans are losing money on savings bonds right now — and they don't even know it.
Dead Money
Bonds that have reached final maturity earn 0% interest. Millions of Americans are holding bonds that stopped earning years ago.
Missed Doubling Dates
EE Bonds are guaranteed to double at exactly 20 years. Cash out at 19 years 11 months and you miss the guaranteed doubling entirely.
Silent Rate Drops
I Bond rates reset every 6 months based on inflation. When your rate drops from 6% to 1.3%, nobody sends a notification.
Three inputs. Zero effort after that.
Enter your bonds once. We'll watch them forever.
Enter Your Bonds
Tell us the type (EE or I), when you bought it, and how much. That's all we need.
30 seconds per bondWe Calculate Everything
Current value, interest rate, maturity date, doubling date, penalty windows — all computed automatically from Treasury data.
rate changeGet Alerts That Matter
Email or SMS alerts 90, 60, and 30 days before key dates. Plus a nudge when your bond stops earning or rates drop significantly.
paid featureEverything the government calculator should have been.
The Treasury's own calculator doesn't even work in Chrome. We built what they didn't.
Smart Alert Timeline
See every upcoming event across all your bonds in one timeline. Doubling dates, maturity deadlines, rate resets, and penalty windows — colour-coded by urgency.
Accurate Valuations
Real-time bond values using official Treasury rate tables. No more guessing what your bonds are worth today.
Email & SMS Alerts
Choose how and when you want to be notified. Get reminders 90, 60, and 30 days before important dates.
Portfolio Dashboard
See all your bonds in one place. Track total value, upcoming milestones, and performance over time.
Private & Secure
Your bond data is encrypted and never shared. We don't need serial numbers — just purchase dates and amounts.
Free to calculate. Paid to never forget.
Start with our free calculator. Upgrade when you want peace of mind.
Pay as you go. Cancel anytime.
- ✓Unlimited bonds tracked
- ✓Email & SMS alerts
- ✓Smart timeline view
- ✓Rate change notifications
- ✓Cancel anytime
Best value. Two months free.
- ✓Unlimited bonds tracked
- ✓Email & SMS alerts
- ✓Smart timeline view
- ✓Rate change notifications
- ✓Priority support
Start monitoring your bonds today
Free calculator to check your bond values. Upgrade to paid alerts when you're ready to never miss another deadline.
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