“The Church earnestly recommends that the pious custom of burial be retained; but it does not forbid cremation, unless this is chosen for reasons which are contrary to Christian teaching.”
– The Code of Canon Law, 1985, #1176.3

 
Vatican Regulations:

1. It is preferred that cremation be delayed until after the Funeral Mass, but the cremated remains may be present at the Funeral Mass and should still be treated with the same respect as corporal remains.

2. The cremated remains should be treated with respect while handling and transporting them.

3. The cremated remains may be interred or entombed in a columbarium, burial plot in a cemetery, or mausoleum.

4. Options like scattering the ashes from the air, on the ground, floating them on the sea, or keeping the cremation ashes at home are not considered respectful.

 
PLANNING THE FUNERAL

To make some decisions about the Mass before meeting with the priest:
  Funeral Liturgy Planning 
 
A representative of the family should contact the priest who will preside at the funeral to arrange a meeting. 

 Fr. Keller 314-487-7970 ext. 1202                 [email protected]
 Fr. Buehler 314-487-7970 ext. 1205                 [email protected]

Assumption provides a table for cremated remains to be placed for the liturgy. The table is large enough to include a photo of the deceased, a religious item representing the faith of the deceased, and some flowers.
 

OTHER SERVICES OFFERED AT ASSUMPTION

Luncheon information
Burial information

 
OFFERINGS AND FEES

Customarily, the following fees are offered:

- $150 fee is often given to the parish.
- $10 fee per altar server (usually there are 3 altar servers).
- $125 fee for the organist.
- $75 fee for the cantor.
- Some families offer the priest a gift.

If the customary fees cause an unreasonable burden, please discuss other options with the priest before the funeral.
 
https://www.vatican.va/roman_curia/congregations/cfaith/documents/rc_con_cfaith_doc_20160815_ad-resurgendum-cum-christo_en.html