How much to tip in Uganda depends entirely on your level of satisfaction and your culture of course, but even a small tip to show your gratitude will be highly appreciated. You might consider a minimum of USD 3 per activity or $10 per day if you are happy with the service of your safari guide and 5-10% tip in upmarket hotels, You should never feel quilty if you dont have what to tip or not willing to, afterall you already paid for such services.