The following is a non-exhaustive list of rules of thumb for budgets (hopefully I don’t get skewered for putting this in print):

Equipment

• a computer purchase can be estimated at ~$2.5k

• Don’t forget to include the cost of federal and provincial taxes in your purchase – don’t let yourself be blindsided by these – they are real and justifiable parts of your cost (most academic institutions only pay a proportion of the GST, therefore use the unrebated portion of the tax in your calculations)
• If you have a large piece of equipment in your lab, you can ask for peripherals to expand/extend use (i.e. lenses for a microscope, etc.)

Materials & Supplies

• Life science disciplines, multiply the number of people supported by the grant by $10k (i.e. 2 grad students and a half time technician = $25k request) adjust downward if you don’t have enzyme or animal costs

• For grants involving cellular, molecular, developmental, biomedical, etc. research, assume an average real cost of ~ $1.5k per month ($18k per year) in supplies
• If you plan to hire undergraduate researchers (summer or otherwise) plan for additional materials and supplies expenses (for wastage)

Travel

• $4-5k for the PI, $1-2k per each supervised student/post-doc

• Aim for about 5% of total budget request

Dissemination

• Estimate ~$1k per paper, unless you use open source publications, then estimate ~$2.5k per paper

Other

• $200-1k for the cost of miscellaneous items such as photocopying, faxing, printing, toner cartridges, etc.

Do you have other rules of thumb to share? Please feel free to add by commenting on this post or sending me an email. I’ll post a more comprehensive list as material becomes available.

(Note: This post was originally posted in October 2008, but I’m not above recycling good information when I’m short on time. It is slightly updated. Hope you find it useful!)