What Happens If Interest Rates Rise?

What rising rates do to a mortgage

Mortgage rates roughly follow the 10-year Treasury, which responds to Fed rate decisions. A 1% increase in your mortgage rate raises monthly P&I by about 10–12% on the same loan amount.

• $400k loan at 6% → $2,398/month
• $400k loan at 7% → $2,661/month (+$263)
• $400k loan at 8% → $2,935/month (+$537 vs 6%)

What rising rates do to home prices

When rates rise, fewer buyers can afford the same prices. That typically cools demand and softens prices — though prices rarely fall as fast as rates rise. In strong markets prices may simply stop appreciating; in weaker ones they can drop 5–15%.

What rising rates do to existing debt

Fixed-rate mortgages

No change. Your rate is locked.

Variable-rate mortgages (ARMs)

Your rate resets on schedule and can jump significantly. A 5/1 ARM that started at 5% could reset to 8% in a high-rate cycle.

Credit cards

APRs are tied to the prime rate. When the Fed hikes 1%, most card APRs rise 1% within a billing cycle.

HELOCs and student loans (variable)

These reset along with the prime rate. A 1% rate increase on a $50,000 HELOC adds about $42/month.

What rising rates do to savings

This is the good news. When the Fed raises rates, banks compete for deposits and high-yield savings accounts, CDs, and money market funds pay more. A 1% rate hike usually adds about 0.7–0.9% to top high-yield savings APYs within months.

What rising rates do to stocks and bonds

• Bond prices fall when rates rise (existing bonds become less attractive).
• Long-duration bonds fall more than short-duration bonds.
• Growth stocks (tech) tend to underperform value stocks in rising-rate environments.
• Real estate (especially REITs) can struggle short-term.

What to do when rates rise

1. Pay down variable-rate debt aggressively (credit cards, HELOCs) — they get more expensive immediately.
2. Lock in a fixed mortgage rate if you're buying or refinancing for stability.
3. Move idle cash from a 0% checking account to a 4–5% high-yield savings account.
4. Don't try to time the housing market. Buy when it makes sense for your life, not based on rate predictions.
5. Stay invested. Markets typically recover from rate-hike cycles within 1–3 years.

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