The Eurasian magpie has a monogamous mating system, with pairs often staying together from one breeding season to the next. The breeding season begins in December, peaking in mid-April. At the start of the breeding season, the Eurasian magpie performs courtship displays to strengthen the pair bond or attract a mate. During courtship, the male rapidly moves his head feathers up and down and raises his tail in a fan shape. The male and female will then call softly to each other. After this, they perform short flights and chases.

Eurasian magpies breed solitarily, often building their nests in the crown of a tall tree. Both the male and female build the nest, but the female does most of the work. The nest consists of a fairly large, dome-shaped structure made of sticks and twigs. The side entrance to the nest is protected by a cup-shaped cavity. The inside of this cavity consists of soft materials such as wool, animal fur, soft grasses, and feathers.

The clutch consists of 2 to 8 eggs. The female incubates the eggs for 21 or 22 days. Meanwhile, she receives food from the male. After the eggs hatch, the pair will feed the chicks, but now the male does most of the work. After 24 to 30 days, the young leave the nest and climb to the surrounding branches. The pair will continue to feed the young for several weeks until they fly away.