This is the updated Zurich tax office communication (translated):
"Corona: Deadline for filing tax returns extended to 31 May 2020 and further measures (updated)
03 April 2020 - Communique
Tax relief measures were also taken as part of the Corona package of the Government Council. The deadline for filing the 2019 tax return was extended to 31 May 2020 for all natural persons. Taxpayers who are currently unable to pay their tax bills due to the consequences of the corona virus have the option of deferring payment or paying in instalments. The default interest rate has been reduced from 4.5% to 0.25%.
The following measures were taken due to the effects of the coronavirus:
Deadline for filing the 2019 tax return: The Finance Department has extended the ordinary deadline for filing the 2019 tax return for individuals until 31 May 2020. This takes into account the increased burden on many taxpayers due to the current situation.
Adjustment of the provisional invoices: Companies that expect to incur losses due to the effects of coronavirus or individuals who suffer a loss of income may request an adjustment of the provisional invoice for state and municipal taxes from the municipal tax office.
Deferral of tax invoices: Companies and individuals who are currently unable to pay definitive tax invoices due to the effects of coronavirus may obtain an extension of the payment period or payment by instalments. The municipal tax office is responsible for state and municipal taxes, and the cantonal tax office is responsible for direct federal taxes. In the case of direct federal tax, provisional tax bills can also be deferred. Municipal tax offices and cantonal tax offices are instructed to handle deferral and instalment payment requests generously and quickly.
Interest on arrears: With a decision of 1 April 2020, the Federal Council reduced the interest on arrears for state and communal taxes from 4.5% to 0.25% from 1 May to 31 December 2020. The interest rate on arrears is thus now the same as the unchanged compensatory and remuneration interest. In the case of direct federal tax, the default interest rate is 0% from 1 March to 31 December 2020.
Restoration of the deadline / raising of objections: Statutory deadlines, in particular the thirty-day deadline for raising objections, cannot be extended by the tax authorities. However, the exceptional situation due to the coronavirus is considered a reason for an extension of the time limit. At the end of the extraordinary situation, the period for objection therefore begins to run anew. The objection must be made in writing (on paper) in accordance with the legal requirements; submission of the objection by e-mail is not valid."
https://www.steueramt.zh.ch/internet...snahmen_2.html