Monopoly Mortgage Rules Explained (and When to Use Them)

Mortgaging is the most misplayed button in Monopoly. Players treat it as a shameful last resort, then go bankrupt holding a wallet full of unmortgaged property. Used deliberately, a mortgage is just a loan from the bank at a known interest rate, and sometimes it is the correct play.

The rules in one minute

• Mortgage a property and the bank pays you half its printed price. A $2,000 property yields $1,000.
• While mortgaged, the property collects no rent. Your opponents land there for free.
• You can only mortgage bare land: any houses on the group must be sold back first.
• To lift the mortgage you repay the mortgage value plus 10 percent interest. That $2,000 property costs $1,200 to reactivate.
• The property still counts as yours for set ownership, but a set with a mortgaged member does not collect double rent on the others.

That 10 percent is the whole business model. Mortgage and quickly unmortgage and you paid a small fee for temporary liquidity. Leave it mortgaged forever and you sold the property for half price.

One twist in our version: the mortgage timer

In Monopoly Online a mortgage is not eternal. You have 7 rounds to buy the property back. If the timer runs out, the property goes to a forced auction and anyone at the table can take it from you at a bargain. The countdown is shown on the card, and the point of the rule is pacing: it stops endgames from freezing into a museum of mortgaged monuments nobody can afford to revive.

So in this version a mortgage is explicitly a short-term loan. Take it when money is coming back soon, not to park a corpse.

When mortgaging is right

• To finish a monopoly. Mortgaging two stray singles to buy the card that completes your orange group is nearly always correct. Houses on a full set out-earn raw land by an order of magnitude.
• To survive a spike. One brutal rent should not force you to sell houses. Selling buildings returns half price and destroys income; a mortgage is the cheaper bridge.
• To deny in an auction. Mortgage capacity is bidding power. Winning a set-completing auction with mortgaged money usually beats staying pretty and letting the set go.

When it is wrong

• Mortgaging income to buy vanity. Do not silence a working railroad to grab an expensive single you cannot build on.
• Mortgaging into a developed board with no plan to repay. You are paying 10 percent to delay a bankruptcy that arrives anyway; consider a trade instead while your cards still have negotiating value.

The deeper rent math behind these calls lives in our property rankings, and the rent calculator lets you check any what-if in seconds.

What happens to a mortgage in practice

Mortgaging is easy to describe and hard to time, so here is the whole picture. Players have mortgaged property 18,560 times. Only 6,187 of those mortgages were ever lifted, which means two out of three squares handed to the bank never came back to their owner.

Blame the timer. 7,191 mortgages, close to four in ten, ran their seven rounds all the way out and went to a forced auction while the former owner watched the square leave the table for good. The average mortgage is signed in round 44, deep into the phase where rent is the only thing still moving money.

Read those two numbers together before you sign. A mortgage is rarely a loan you repay. In practice it is a sale with a delay, so take it when the cash buys you something that outlives the property.

One ordering rule sits on top of all of this: buildings come down before the land can be mortgaged. What they cost to put up, and what you get back for tearing them down, is in our houses and hotels guide. If the money still doesn't reach, the bankruptcy rules explain who ends up with your board.