If a woman trades her gold for other gold, is the year (for zakaah) interrupted?
Question

                There is a woman who has gold that reaches the nisaab (minim threshold at which zakaah is due) but during the year she traded the gold that she had for other gold. Should she start counting a new year for the new gold that she bought?.
Praise be to Allah.
    No, she should not start a new year for it, rather she should 
    complete the year that she was counting for the gold that she had first. 

    That is because the basic principle according to the scholars 
    is that the one who exchanges wealth that is subject to zakaah for wealth of 
    the same type should not start counting a new year, rather he should 
    complete the year for the first wealth. 

    If he exchanges gold for gold, or silver for silver, or sheep 
    for sheep, or camels for camels, or trade goods for trade goods, he should 
    not stop counting the year because of that, rather he should complete the 
    first year.  

    Ibn Qudaamah (may Allaah have mercy on him) said in 
    al-Mughni (4/135): 

    If he sells wealth that reaches the nisaab for zakaah for 
    which he was counting the year, for wealth of the same type, such as camels 
    for camels, cattle for cattle, sheep for sheep, gold for gold or silver for 
    silver, he should not stop counting the year, and he should count the year 
    for the second (wealth) on the basis of the year for the first. End quote. 

    Shaykh Muhammad ibn ‘Uthaymeen (may Allaah have mercy on him) 
    was asked about a woman who had gold that reached the nisaab, and during the 
    year she exchanged it for other gold; should she stop counting the year and 
    calculate a new year from the time of the exchange, or not? 

    He replied: The year should not be interrupted in this case, 
    because this woman exchanged gold for the same type of wealth. End quote. 

    Majmoo’ Fataawa Ibn ‘Uthaymeen 
    (18/45). 

    And Allaah knows best.